Copy edits for typos

source/core/index-partial.txt

@@ -255,7 +255,7 @@ fields are greater than ``21``:
    db.users.insert( { username: "rajiv", age: 32 } )
 
 However, the following documents with duplicate usernames are allowed
-since the the unique constraint only applies to documents with ``age``
+since the unique constraint only applies to documents with ``age``
 greater than or equal to 21.
 
 .. code-block:: javascript

source/includes/ref-toc-aggregation-group.yaml

@@ -10,7 +10,7 @@ description: |
 name: :group:`$avg`
 file: /reference/operator/aggregation/avg
 description: |
-  Returns an average of numberical values. Ignores non-numeric values.
+  Returns an average of numerical values. Ignores non-numeric values.
 
   .. versionchanged:: 3.2
      Available in both :pipeline:`$group` and :pipeline:`$project`

source/includes/steps-create-admin-then-enable-authentication.yaml

@@ -72,7 +72,7 @@ action:
   - pre: |
       Either connect a new :program:`mongo` shell to the MongoDB
       instance with the ``-u <username>``, ``-p <password>``, and
-      the ``--authenticationDatabse <database>``:
+      the ``--authenticationDatabase <database>``:
     language: sh
     code: |
       mongo --port 27017 -u "myUserAdmin" -p "abc123" --authenticationDatabase "admin"

source/includes/steps-getting-started-update-replace.yaml

@@ -6,7 +6,7 @@ ref: replace-document
 action:
   - pre: |
       The following operation replaces the document with ``item`` equal
-      to ``"BE10"``. The newly replaced document will only contain the
+      to ``"BE10"``. The newly replaced document will only contain
       the ``_id`` field and the fields in the replacement document.
     language: javascript
     code: |
@@ -25,4 +25,4 @@ action:
     language: javascript
     code: |
        WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })
-...
+...

source/includes/steps-replace-disabled-config-server.yaml

@@ -21,7 +21,7 @@ action:
      rs.add("<hostnameNew>:<portNew>")
 post: |
    The initial sync process copies all the data from one member of the
-   conifg server replica set to the new member without restarting.
+   config server replica set to the new member without restarting.
 
    :program:`mongos` instances automatically recognize the change in the
    config server replica set members without restarting.