Fix typo

Author: npentrel

source/reference/command/collMod.txt

@@ -156,7 +156,7 @@ Document Validation
    The ``validator`` option takes a document that specifies the
    validation rules or expressions. You can specify the expressions
    using the same operators as the :ref:`query operators
-   <query-selectors>` with the exception of : :query:`$geoNear`,
+   <query-selectors>` with the exception of :pipeline:`$geoNear`,
    :query:`$near`, :query:`$nearSphere`, :query:`$text`, and
    :query:`$where`.
 

source/reference/command/create.txt

@@ -159,7 +159,7 @@ Definition
           The ``validator`` option takes a document that specifies the
           validation rules or expressions. You can specify the expressions using
           the same operators as the :ref:`query operators <query-selectors>`
-          with the exception of :query:`$geoNear`, :query:`$near`,
+          with the exception of :pipeline:`$geoNear`, :query:`$near`,
           :query:`$nearSphere`, :query:`$text`, and :query:`$where`.
 
           .. note::

source/reference/method/db.createCollection.txt

@@ -187,7 +187,7 @@ Definition
           The ``validator`` option takes a document that specifies the
           validation rules or expressions. You can specify the expressions using
           the same operators as the :ref:`query operators <query-selectors>`
-          with the exception of :query:`$geoNear`, :query:`$near`,
+          with the exception of :pipeline:`$geoNear`, :query:`$near`,
           :query:`$nearSphere`, :query:`$text`, and :query:`$where`.
 
           .. note::