Fix spelling

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

README.md

@@ -55,7 +55,7 @@ To speak with us, please leave a message on [our website](https://appscode.com/c
 
 To join public discussions with the Stash community, join us in the [AppsCode Slack team](https://appscode.slack.com/messages/C8NCX6N23/details/) channel `#stash`. To sign up, use our [Slack inviter](https://slack.appscode.com/).
 
-To receive product annoucements, follow us on [Twitter](https://twitter.com/KubeStash).
+To receive product announcements, follow us on [Twitter](https://twitter.com/KubeStash).
 
 If you have found a bug with Stash or want to request new features, please [file an issue](https://github.com/stashed/project/issues/new).