DOCS-658 and DOCS-684 remove extraneous specification from headings

Author: kay-kim

draft/core/document.txt

@@ -203,18 +203,18 @@ Take the following considerations for the ``_id`` field:
 
 .. _documents-query-selectors:
 
-Query Specification Documents
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Query Documents
+~~~~~~~~~~~~~~~
 
-Query selector documents specify the conditions that determine which
-records to select for read, update, and delete operations. You can use
-field and value expressions to specify the equality condition and
-:doc:`query operator </reference/operators>` expressions to specify
-additional conditions. Refer to :doc:`read </applications/read>`,
-:doc:`update </applications/update>`, and :doc:`delete
-</applications/delete>` pages for more examples.
+Query documents specify the conditions that determine which records to
+select for read, update, and delete operations. You can use field and
+value expressions to specify the equality condition and :doc:`query
+operator </reference/operators>` expressions to specify additional
+conditions. Refer to :doc:`read </applications/read>`, :doc:`update
+</applications/update>`, and :doc:`delete </applications/delete>` pages
+for more examples.
 
-Consider the following examples of query selector documents:
+Consider the following examples of query documents:
 
 - The following document specifies the query criteria where ``_id`` is
   equal to ``1``:
@@ -261,17 +261,17 @@ for MongoDB to return, remove, or update, as in the following:
 
 .. _documents-update-actions:
 
-Update Specification Documents
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Update Documents
+~~~~~~~~~~~~~~~~
 
-The update action documents specify the data modifications to perform
-during an :method:`update() <db.collection.update()>` operation to
-modify existing records in a collection. You can use :ref:`update
-operators <update-operators>` to specify the exact actions to perform
-on the document fields. See the :ref:`update operators
-<update-operators>` page for the available update operators and syntax.
+The update documents specify the data modifications to perform during
+an :method:`update() <db.collection.update()>` operation to modify
+existing records in a collection. You can use :ref:`update operators
+<update-operators>` to specify the exact actions to perform on the
+document fields. See the :ref:`update operators <update-operators>`
+page for the available update operators and syntax.
 
-Consider the update specification document example:
+Consider the update document example:
 
 .. code-block:: javascript
 
@@ -310,16 +310,16 @@ When passed as an argument to the :method:`update()
 .. _documents-index:
 .. _document-index-specification:
 
-Index Specification Documents
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Index Documents
+~~~~~~~~~~~~~~~
 
 Indexes optimize a number of key :doc:`read </core/read-operations>`
-and :doc:`write </core/write-operations>` operations. Index
-specification documents describe the fields to index on during the
-:doc:`index creation </reference/method/db.collection.ensureIndex>`. See :doc:`indexes
+and :doc:`write </core/write-operations>` operations. Index documents
+describe the fields to index on during the :doc:`index creation
+</reference/method/db.collection.ensureIndex>`. See :doc:`indexes
 </core/indexes>` for an overview of indexes.
 
-The index specification documents contain field and value pairs, in
+The index documents contain field and value pairs, in
 the following form:
 
 .. code-block:: javascript
@@ -348,16 +348,16 @@ the index to create:
 
 .. _documents-sort-order:
 
-Sort Order Specification Documents
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+Sort Order Documents
+~~~~~~~~~~~~~~~~~~~~
 
 The sort order documents specify the order of documents that a
 :method:`query() <db.collection.find()>` returns. Pass sort order
 specification documents as an argument to the :method:`sort()
 <cursor.sort()>` method. See the :method:`sort() <cursor.sort()>` page
 for more information on sorting.
 
-The sort order specifications contain field and value pairs, in the following
+The sort order documents contain field and value pairs, in the following
 form:
 
 .. code-block:: javascript