docs: fix typo

Author: vuittont60

contrib/devtools/README.md

@@ -83,7 +83,7 @@ A small script to automatically create manpages in ../../doc/man by running the
 This requires help2man which can be found at: https://www.gnu.org/software/help2man/
 
 With in-tree builds this tool can be run from any directory within the
-repostitory. To use this tool with out-of-tree builds set `BUILDDIR`. For
+repository. To use this tool with out-of-tree builds set `BUILDDIR`. For
 example:
 
 ```bash