Edit the min() description accordingly

Author: patiencedaur

doc/reference/reference_lua/box_index/max.rst

@@ -14,8 +14,8 @@ index_object:max()
         :param scalar/table      key: values to be matched against the index key
 
         :return: the tuple for the last key in the index. If the optional ``key`` value
-                 is supplied, returns the last key which is less than or equal to ``key``.
-                 Starting with :doc:`Tarantool 2.0.4 <release/2.1.2>`, ``index_object:max(key)``
+                 is supplied, returns the last key that is less than or equal to ``key``.
+                 Starting with :doc:`Tarantool 2.0.4 </release/2.1.2>`, ``index_object:max(key)``
                  returns nothing if ``key`` doesn't match any value in the index.
         :rtype:  tuple
 

doc/reference/reference_lua/box_index/min.rst

@@ -14,12 +14,11 @@ index_object:min()
                                           <app_server-object_reference>`.
         :param scalar/table      key: values to be matched against the index key
 
-        :return: the tuple for the first key in the index. If optional
-                 ``key`` value is supplied, returns the first key which
-                 is greater than or equal to ``key`` value.
-                 Starting with Tarantool version 2.0, index_object:min(``key``
-                 value) will return nothing
-                 if ``key`` value is not equal to a value in the index.
+        :return: the tuple for the first key in the index. If the optional
+                 ``key`` value is supplied, returns the first key that is greater than or equal to ``key``.
+                 Starting with :doc:`Tarantool 2.0.4 </release/2.1.2>`,
+                 ``index_object:min(key)`` returns nothing
+                 if ``key`` doesn't match any value in the index.
         :rtype:  tuple
 
         **Possible errors:** index is not of type 'TREE'.