(Multiple languages) Be clearer about which query is being discussed

docs/codeql/codeql-language-guides/analyzing-data-flow-in-csharp.rst

@@ -117,7 +117,7 @@ Then we can make the source more specific, for example an access to a public par
      and call.getEnclosingCallable().(Member).isPublic()
    select p, "Opening a file from a public method."
 
-This query finds calls to ``String.Format`` where the format string isn't hard-coded:
+The following query finds calls to ``String.Format`` where the format string isn't hard-coded:
 
 .. code-block:: ql
 

docs/codeql/codeql-language-guides/analyzing-data-flow-in-go.rst

@@ -93,7 +93,7 @@ For example, you can find taint propagation from a parameter ``source`` to an ex
 Examples
 ~~~~~~~~
 
-This query finds the filename passed to ``os.Open(..)``.
+This query finds the filename passed to ``os.Open(..)``:
 
 .. code-block:: ql
 
@@ -131,7 +131,7 @@ Then we can make the source more specific, for example an access to a parameter.
      DataFlow::localFlow(DataFlow::parameterNode(p), DataFlow::exprNode(call.getArgument(0)))
    select p
 
-This query finds calls to formatting functions where the format string is not hard-coded.
+The following query finds calls to formatting functions where the format string is not hard-coded.
 Note that `StringOps::Formatting::Range <https://codeql.github.com/codeql-standard-libraries/go/semmle/go/StringOps.qll/type.StringOps$StringOps$Formatting$Range.html>`_ is a class that represents all functions which have a format string, and its member predicate `getFormatStringIndex` gives the index of the argument which is the format string.
 
 .. code-block:: ql

docs/codeql/codeql-language-guides/analyzing-data-flow-in-java.rst

@@ -97,7 +97,7 @@ For example, you can find taint propagation from a parameter ``source`` to an ex
 Examples
 ~~~~~~~~
 
-This query finds the filename passed to ``new FileReader(..)``.
+This query finds the filename passed to ``new FileReader(..)``:
 
 .. code-block:: ql
 
@@ -137,7 +137,7 @@ Then we can make the source more specific, for example an access to a public par
      DataFlow::localFlow(DataFlow::parameterNode(p), DataFlow::exprNode(call.getArgument(0)))
    select p
 
-This query finds calls to formatting functions where the format string is not hard-coded.
+The following query finds calls to formatting functions where the format string is not hard-coded.
 
 .. code-block:: ql