indentation fix

Author: rustagir

source/whats-new.txt

@@ -38,13 +38,13 @@ What's New in 2.0
    changes:
 
    - The following methods return ``void`` instead of the raw command
-	 response:
+     response:
 
-	 - ``MongoDB\Client``: ``dropDatabase()``
-	 - ``MongoDB\Collection``: ``drop()``, ``dropIndex()``,
-	   ``dropIndexes()``, ``dropSearchIndex()``, ``rename()``
-	 - ``MongoDB\Database``: ``createCollection()``, ``drop()``,
-	   ``dropCollection()``, ``renameCollection()``
+     - ``MongoDB\Client``: ``dropDatabase()``
+     - ``MongoDB\Collection``: ``drop()``, ``dropIndex()``,
+       ``dropIndexes()``, ``dropSearchIndex()``, ``rename()``
+     - ``MongoDB\Database``: ``createCollection()``, ``drop()``,
+       ``dropCollection()``, ``renameCollection()``
 
    To learn more about breaking changes in this release, see the
    :ref:`Version 2.0 Breaking Changes <php-v2-breaking-changes>` section
@@ -67,14 +67,14 @@ and removals:
 - Removes deprecated fields in GridFS types.
 
   - The library does not calculate the ``md5`` field when a file is
-	uploaded to GridFS. If your application requires a file digest, you
-	must implement this process outside GridFS and store the values in
-	metadata.
+    uploaded to GridFS. If your application requires a file digest, you
+    must implement this process outside GridFS and store the values in
+    metadata.
 
   - The fields ``contentType`` and ``aliases`` are no longer stored in
-	the ``files`` GridFS collection. If your application requires this
-	information, you must store it in metadata. To learn more about
-	GridFS, see the :ref:`php-gridfs` guide.
+    the ``files`` GridFS collection. If your application requires this
+    information, you must store it in metadata. To learn more about
+    GridFS, see the :ref:`php-gridfs` guide.
 
 - Removes the following deprecated options for find operations: