Updated Filer Store Replication (markdown)

Filer-Store-Replication.md

@@ -1,4 +1,4 @@
-Here we talk about using `weed filer -peers=...`. It actually achieves two purposes:
+Here we talk about using `weed filer -peers=...`, which achieves two purposes:
 1. Aggregate filer meta data changes from peers
 2. Replay filer meta data changes to local filer store