Remove extraneous backtick in readme.

README.md

@@ -20,7 +20,7 @@ Things are looking good if the console prints something like:
 	Connected <your bot name> to <your slack team> team at https://<your slack team>.slack.com.
 
 ### Run locally in Docker
-	docker build -t starter-ruby .`
+	docker build -t starter-ruby .
 	docker run --rm -it -e SLACK_TOKEN=<YOUR SLACK API TOKEN> starter-ruby
 
 ### Run in BeepBoop
@@ -32,4 +32,4 @@ This code is influenced by and utilizes the awesome https://github.com/dblock/sl
 
 ## License
 
-See the [LICENSE](LICENSE.md) file for license rights and limitations (MIT).
+See the [LICENSE](LICENSE.md) file for license rights and limitations (MIT).