fix title case for Staic Site Generators section link (#3164)

- see also https://github.com/awesome-selfhosted/awesome-selfhosted/pull/3163

README.md

@@ -1892,7 +1892,7 @@ Before hosting one, please see [shortcomings](https://en.wikipedia.org/wiki/URL_
 
 **[`^        back to top        ^`](#)**
 
-_Related: [Static site generators](#static-site-generators)_
+_Related: [Static Site Generators](#static-site-generators)_
 
 _See also: [Wikimatrix](https://www.wikimatrix.org/), [Wiki Engines - WikiIndex](https://wikiindex.org/Category:Wiki_Engine), [List of wiki software - Wikipedia](https://en.wikipedia.org/wiki/List_of_wiki_software), [Comparison of wiki software - Wikipedia](https://en.wikipedia.org/wiki/Comparison_of_wiki_software)_