Help: Remove "this command" ambiguity in set() docs

Help/command/set.rst

@@ -27,11 +27,12 @@ Set Normal Variable
   If the ``PARENT_SCOPE`` option is given the variable will be set in
   the scope above the current scope.  Each new directory or :command:`function`
   command creates a new scope.  A scope can also be created with the
-  :command:`block` command. This command will set the value of a variable into
-  the parent directory, calling function or encompassing scope (whichever is
-  applicable to the case at hand). The previous state of the variable's value
-  stays the same in the current scope (e.g., if it was undefined before, it is
-  still undefined and if it had a value, it is still that value).
+  :command:`block` command. ``set(PARENT_SCOPE)`` will set the value
+  of a variable into the parent directory, calling function, or
+  encompassing scope (whichever is applicable to the case at hand).
+  The previous state of the variable's value stays the same in the
+  current scope (e.g., if it was undefined before, it is still undefined
+  and if it had a value, it is still that value).
 
   The :command:`block(PROPAGATE)` and :command:`return(PROPAGATE)` commands
   can be used as an alternate method to the :command:`set(PARENT_SCOPE)`