[docs][skip ci] Add sponsoring to docs.

Author: makasim

README.md

@@ -2,7 +2,7 @@
 
 Enqueue is an MIT-licensed open source project with its ongoing development made possible entirely by the support of community and our customers. If you'd like to join them, please consider:
 
-- [Become a sponsor](https://www.patreon.com/makasim).
+- [Become a sponsor](https://www.patreon.com/makasim)
 - [Become our client](http://forma-pro.com/)
 
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