doc: Correct punctuation with conjunctive adverb grammar rule in elektra-granularity.md
# elektra-granularity(7) -- relation of keys to files
-Keys of a backend can only be retrieved as a full key set. Currently it
+Keys of a backend can only be retrieved as a full key set. Currently, it
is not possible to fetch a part of the keys of a backend. So the user
needs to cut out the interesting keys with `ksCut()` afterwards.
If the keys should be committed again, the whole key set must be
@@ -12,7 +12,7 @@ the full `KeySet`. For example, a plugin that checks the availability
and structure of all keys cannot work with a partial key set.
It is problematic to have too many keys in one backend. The applications
-would need memory for unnecessary configuration data. Instead we
+would need memory for unnecessary configuration data. Instead, we
recommend introducing several mount points to split up the keys into
different backends. Splitting up key sets makes sense if any application
requests only a part of the configuration. No benefits arise if every
