index.html: clarify instruction for selecting a tag in Heptapod

Author: muxator

index.html

@@ -163,8 +163,8 @@ <h3>Installing Hg-Git manually</h3>
           Different versions of hg-git are known to work with different
           versions of Mercurial. For the most accurate info, go to
           <a href="https://foss.heptapod.net/mercurial/hg-git">the source
-          on Heptapod</a>, click the dropdown menu that says "default",
-          click the "Tags" tab, select the version you've installed, and
+          on Heptapod</a>, click the dropdown menu that says "branch/default",
+          select the tag corresponding to the version you've installed, and
           click on the file "Makefile". There's a line that starts with
           "all-version-tests" which lists the versions of Mercurial
           known to work.