Fixing a whitespace after to a comma

source/core/indexes.txt

@@ -611,7 +611,7 @@ You specify index creation options in the second argument in
 :method:`ensureIndex() <db.collection.ensureIndex()>`.
 
 The options :ref:`sparse <index-type-sparse>`, :ref:`unique
-<index-type-unique>`,and :ref:`TTL <index-feature-ttl>` affect the
+<index-type-unique>`, and :ref:`TTL <index-feature-ttl>` affect the
 kind of index that MongoDB creates. This section addresses,
 :ref:`background construction <index-creation-background>` and
 :ref:`duplicate dropping <index-creation-duplicate-dropping>`, which

source/reference/command/compact.txt

@@ -136,7 +136,7 @@ compact
      this collection.
 
    - :dbcommand:`compact` generally uses less disk space than
-     :dbcommand:`repairDatabase` and is faster. However,the
+     :dbcommand:`repairDatabase` and is faster. However, the
      :dbcommand:`compact` command is still slow and blocks other
      database use. Only use :dbcommand:`compact` during scheduled
      maintenance periods.

source/reference/command/serverStatus.txt

@@ -1475,7 +1475,7 @@ metrics
 .. data:: serverStatus.metrics.repl.network.getmores
 
    :data:`~serverStatus.metrics.repl.network.getmores` reports on the
-   ``getmore`` operations,which are requests for additional results
+   ``getmore`` operations, which are requests for additional results
    from the oplog :term:`cursor` as part of the oplog replication
    process.