nit: Correct facebook typo (#941)

facebook typo

Author: andrewmundy

packages/website/src/pages/about.mdx

@@ -1,6 +1,6 @@
 # About react-docgen
 
-react-docgen was initially created by [Facbook](https://www.facebook.com) member
+react-docgen was initially created by [Facebook](https://www.facebook.com) member
 [Felix Kling](https://felix-kling.de) in 2015. Since 2016,
 [Daniel Tschinder](https://danieltschinder.com) contributed to the project and
 in 2019 took over as a core maintainer.