man: Update bugs url in text version

Follows-up ec78260 / #1118.

Author: Krinkle

man/marked.1.txt

@@ -81,7 +81,7 @@ CONFIGURATION
 
 
 BUGS
-       Please report any bugs to https://github.com/chjj/marked.
+       Please report any bugs to https://github.com/markedjs/marked.
 
 
 LICENSE