Correct the URL pointing to PL/R

As pointed out by documentation comment, the URL for PL/R
needs to be updated to the correct current repository. Back-patch
to all supported branches.

diff --git a/doc/src/sgml/external-projects.sgml b/doc/src/sgml/external-projects.sgml
index 74b838be8e6513187dc17407867a63d7855b2eaf..d0a1ef3fb9e6f1dacf621784392c6d935cbed0a1 100644 (file)
--- a/doc/src/sgml/external-projects.sgml
+++ b/doc/src/sgml/external-projects.sgml
@@ -205,7 +205,7 @@
      
       PL/R
       R
-      ://www.joeconway.com/plr.html">
+      s://github.com/postgres-plr/plr">