Update template repo link to EISOP (#1031)

docs/manual/creating-a-checker.tex

@@ -212,7 +212,7 @@
 repository \url{https://github.com/eisop/checker-framework}.
 Another choice is to write it in a stand-alone repository.  Here is a
 template for a stand-alone repository:
-\url{https://github.com/typetools/templatefora-checker}; at that URL,
+\url{https://github.com/eisop/templatefora-checker}; at that URL,
 click the ``Use this template'' button.
 
 % You may also wish to consult Section~\ref{creating-testing-framework} for