DOCSP-27749 Adds interlinks for mongosh Query Plan Cache methods (#2529)

Author: kennethdyer

source/reference/command/planCacheClear.txt

@@ -19,6 +19,11 @@ Definition
    shape` to remove cached query plans for that shape. Omit the query
    shape to clear all cached query plans.
 
+   .. |method| replace:: :method:`PlanCache.clear` and 
+      :method:`PlanCache.clearPlansByQuery` helper methods
+   .. include:: /includes/fact-dbcommand-tip
+
+
 Syntax
 ------
 

source/reference/method/PlanCache.clear.txt

@@ -17,6 +17,9 @@ Definition
 
    Removes all cached query plans for a collection.
 
+   .. |dbcommand| replace:: :dbcommand:`planCacheClear` command
+   .. include:: /includes/fact-mongosh-shell-method-alt
+
    The method is only available from the :method:`plan cache object
    <db.collection.getPlanCache()>` of a specific collection; i.e.
 

source/reference/method/PlanCache.clearPlansByQuery.txt

@@ -17,6 +17,9 @@ Definition
 
    Clears the cached query plans for the specified :term:`query shape`.
 
+   .. |dbcommand| replace:: :dbcommand:`planCacheClear` command
+   .. include:: /includes/fact-mongosh-shell-method-alt
+
    The method is only available from the :method:`plan cache object
    <db.collection.getPlanCache()>` of a specific collection; i.e.