update the `bug` link in the sidebar to the report bug wiki page

app/views/streams/main_stream.html.haml

@@ -81,8 +81,8 @@
                   tag_path(name: t("aspects.index.help.tag_question"))))
               %li
                 != t("aspects.index.help.find_a_bug",
-                  link: link_to("#" + t("aspects.index.help.tag_bug"),
-                  tag_path(name: t("aspects.index.help.tag_bug"))))
+                  link: link_to(t("aspects.index.help.tag_bug"),
+                  "https://wiki.diasporafoundation.org/How_to_report_a_bug"))
               %li
                 != t("aspects.index.help.feature_suggestion",
                   link: link_to("#" + t("aspects.index.help.tag_feature"),