fixup! hs: Change default version from 2 to 3

changes/ticket27215

@@ -0,0 +1,9 @@
+  o Major feature (hidden service):
+    - For a newly created hidden service, the default version is now 3. Tor
+      still supports version 2 service but the operator now needs to
+      specifically set "HiddenServiceVersion 2" in order to create a new
+      service.
+
+      For existing services, tor now learns the version by reading the key
+      file so the HiddenServiceVersion is not mandatory in that case. Closes
+      ticket 27215.