remove double space (#82)

Author: MaxWang96

README.md

@@ -329,7 +329,7 @@ For optimal performance in production environments:
 
 ## Contributing
 
-This project welcomes contributions and suggestions.  Most contributions require you to agree to a
+This project welcomes contributions and suggestions. Most contributions require you to agree to a
 Contributor License Agreement (CLA) declaring that you have the right to, and actually do, grant us
 the rights to use your contribution. For details, visit [Contributor License Agreements](https://cla.opensource.microsoft.com).