[DOCS] Changed Discover app to Discover (#59769)

Author: KOTungseth

docs/apm/advanced-queries.asciidoc

@@ -21,22 +21,22 @@ TIP: Read the {kibana-ref}/kuery-query.html[Kibana Query Language Enhancements]
 
 [float]
 [[discover-advanced-queries]]
-=== Querying in the Discover app
+=== Querying in Discover
 
-It may also be helpful to view your APM data in the {kibana-ref}/discover.html[Discover app].
-Querying documents in Discover works the same way as querying in the APM app,
-and all of the example APM app queries can also be used in the Discover app.
+It may also be helpful to view your APM data in {kibana-ref}/discover.html[*Discover*].
+Querying documents in *Discover* works the same way as querying in the APM app,
+and all of the example APM app queries can also be used in *Discover*.
 
 [float]
-==== Example Discover app query
+==== Example Discover query
 
-One example where you may want to make use of the Discover app,
+One example where you may want to make use of *Discover*,
 is for viewing  _all_ transactions for an endpoint, instead of just a sample.
 
 TIP: Starting in v7.6, you can view 10 samples per bucket in the APM app, instead of just one.
 
 Use the APM app to find a transaction name and time bucket that you're interested in learning more about.
-Then, switch to the Discover app and make a search:
+Then, switch to *Discover* and make a search:
 
 ["source","sh"]
 -----

docs/getting-started/tutorial-discovering.asciidoc

@@ -1,7 +1,7 @@
 [[tutorial-discovering]]
 === Discover your data
 
-Using the Discover application, you can enter
+Using *Discover*, you can enter
 an {ref}/query-dsl-query-string-query.html#query-string-syntax[Elasticsearch
 query] to search your data and filter the results.
 
@@ -12,7 +12,7 @@ You might need to click *New* in the menu bar to refresh the data.
 
 . Click the caret to the right of the current index pattern, and select `ba*`.
 +
-By default, all fields are shown for each matching document. 
+By default, all fields are shown for each matching document.
 
 . In the search field, enter the following string:
 +