dgit: tag format: Add missing $protovsn comment re tagformat param

No fuctional change.  We are going to get rid of this in a moment, but
this change makes clearer what is going on.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

1 files changed, 1 insertions, 1 deletions

diff --git a/dgit b/dgit
index 6a035d6..1e0c0e1 100755
--- a/dgit
+++ b/dgit
@@ -468,7 +468,7 @@ sub branch_is_gdr ($) {
 #
 #  > param head DGIT-VIEW-HEAD
 #  > param csuite SUITE
-#  > param tagformat old|new
+#  > param tagformat old|new          # $protovsn >= 4
 #  > param maint-view MAINT-VIEW-HEAD
 #
 #  > param buildinfo-filename P_V_X.buildinfo   # zero or more times