Update README.md

Small typo and grammatical fix

README.md

@@ -119,7 +119,7 @@ It is a great solution for communities and companies wanting to privately host t
 - Kerberos Authentication: [Issue #839](https://github.com/RocketChat/Rocket.Chat/issues/839)
 - XMPP Multi-user chat (MUC): [Issue #404](https://github.com/RocketChat/Rocket.Chat/issues/404)
 - More webhooks: GitLab, Confluence, Jira, Piwik, Wordpress: [Issue #233](https://github.com/RocketChat/Rocket.Chat/issues/233), [Issue #525](https://github.com/RocketChat/Rocket.Chat/issues/525), [Issue #637](https://github.com/RocketChat/Rocket.Chat/issues/637), [Issue #638](https://github.com/RocketChat/Rocket.Chat/issues/638), [Issue #747](https://github.com/RocketChat/Rocket.Chat/issues/747)
-- Clusterize / Descentralize: [Issue #520](https://github.com/RocketChat/Rocket.Chat/issues/520), [Issue #601](https://github.com/RocketChat/Rocket.Chat/issues/601)
+- Clusterize / Decentralize: [Issue #520](https://github.com/RocketChat/Rocket.Chat/issues/520), [Issue #601](https://github.com/RocketChat/Rocket.Chat/issues/601)
 - Anonymous use of Rocket.Chat: [Issue #604](https://github.com/RocketChat/Rocket.Chat/issues/604)
 - File Sharing via P2P and Scalable Multicast: [Issue #369](https://github.com/RocketChat/Rocket.Chat/issues/369), [Issue #370](https://github.com/RocketChat/Rocket.Chat/issues/370)
 - Anti-virus checking on file uploads: [Issue #757](https://github.com/RocketChat/Rocket.Chat/issues/757)
@@ -249,7 +249,7 @@ If you want to help, send an email to support at rocket.chat to be invited to th
 
 ### Community
 
-Join the the conversation at [Twitter](http://twitter.com/RocketChatApp), [Facebook](https://www.facebook.com/RocketChatApp) or [Google Plus](https://plus.google.com/+RocketChatApp)
+Join the conversation at [Twitter](http://twitter.com/RocketChatApp), [Facebook](https://www.facebook.com/RocketChatApp) or [Google Plus](https://plus.google.com/+RocketChatApp)
 
 ### License