Search: Replacing MSDN links with aka.ms links

The aka.ms links still point to MSDN, but they'll be updated to
docs.microsoft.com after the migration.

arm-search/2015-08-19/swagger/search.json

@@ -44,7 +44,7 @@
         "operationId": "AdminKeys_Get",
         "description": "Gets the primary and secondary admin API keys for the specified Azure Search service.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832685.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -87,7 +87,7 @@
         "operationId": "AdminKeys_Regenerate",
         "description": "Regenerates either the primary or secondary admin API key. You can only regenerate one key at a time.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832700.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -145,7 +145,7 @@
         "operationId": "QueryKeys_Create",
         "description": "Generates a new query key for the specified Search service. You can create up to 50 query keys per service.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832690.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -198,7 +198,7 @@
         "operationId": "QueryKeys_ListBySearchService",
         "description": "Returns the list of query API keys for the given Azure Search service.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832701.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -241,7 +241,7 @@
         "operationId": "QueryKeys_Delete",
         "description": "Deletes the specified query key. Unlike admin keys, query keys are not regenerated. The process for regenerating a query key is to delete and then recreate it.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832697.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -294,7 +294,7 @@
         "operationId": "Services_CreateOrUpdate",
         "description": "Creates or updates a Search service in the given resource group. If the Search service already exists, all properties will be updated with the given values.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832687.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -354,7 +354,7 @@
         "operationId": "Services_Get",
         "description": "Gets the Search service with the given name in the given resource group.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832694.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -395,7 +395,7 @@
         "operationId": "Services_Delete",
         "description": "Deletes a Search service in the given resource group, along with its associated resources.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832692.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -444,7 +444,7 @@
         "operationId": "Services_ListByResourceGroup",
         "description": "Gets a list of all Search services in the given resource group.",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/dn832688.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "parameters": [
           {
@@ -483,7 +483,7 @@
         ],
         "description": "Checks whether or not the given Search service name is available for use. Search service names must be globally unique since they are part of the service URI (https://<name>.search.windows.net).",
         "externalDocs": {
-          "url": "https://msdn.microsoft.com/library/azure/mt574113.aspx"
+          "url": "https://aka.ms/search-manage"
         },
         "operationId": "Services_CheckNameAvailability",
         "parameters": [
@@ -548,10 +548,7 @@
           }
         }
       },
-      "description": "Input of check name availability API.",
-      "externalDocs": {
-        "url": "https://msdn.microsoft.com/library/azure/mt574113.aspx"
-      }
+      "description": "Input of check name availability API."
     },
     "CheckNameAvailabilityOutput": {
       "type": "object",
@@ -581,10 +578,7 @@
           "readOnly": true
         }
       },
-      "description": "Output of check name availability API.",
-      "externalDocs": {
-        "url": "https://msdn.microsoft.com/library/azure/mt574113.aspx"
-      }
+      "description": "Output of check name availability API."
     },
     "AdminKeyResult": {
       "properties": {
@@ -769,15 +763,15 @@
           "type": "string",
           "description": "The ID of the resource. This can be used with the Azure Resource Manager to link resources together.",
           "externalDocs": {
-            "url": "https://msdn.microsoft.com/library/azure/mt238499.aspx"
+            "url": "https://aka.ms/search-linked-resources"
           }
         },
         "name": {
           "readOnly": true,
           "type": "string",
           "description": "The name of the resource.",
           "externalDocs": {
-            "url": "https://msdn.microsoft.com/library/azure/dn857353.aspx"
+            "url": "https://aka.ms/search-naming-rules"
           }
         },
         "type": {
@@ -789,7 +783,7 @@
           "type": "string",
           "description": "The geographic location of the resource. This must be one of the supported and registered Azure Geo Regions (for example, West US, East US, Southeast Asia, and so forth).",
           "externalDocs": {
-            "url": "https://msdn.microsoft.com/library/azure/dn790534.aspx"
+            "url": "https://aka.ms/search-rp-info"
           },
           "x-ms-mutability": [
             "create",