Add new vector method to migrations (#10007)

add dimensions missing parameter to vector
revert whitespace changes

Author: wilsenhc

migrations.md

@@ -458,6 +458,7 @@ The schema builder blueprint offers a variety of methods that correspond to the
 [uuidMorphs](#column-method-uuidMorphs)
 [ulid](#column-method-ulid)
 [uuid](#column-method-uuid)
+[vector](#column-method-vector)
 [year](#column-method-year)
 
 </div>
@@ -918,6 +919,13 @@ The `uuid` method creates a `UUID` equivalent column:
 
     $table->uuid('id');
 
+<a name="column-method-vector"></a>
+#### `vector()` {.collection-method}
+
+The `vector` method creates a `vector` equivalent column:
+
+    $table->vector('embedding', dimensions: 100);
+
 <a name="column-method-year"></a>
 #### `year()` {.collection-method}