osmo-release: fix libversion updating comment

The related manual says:

> 4. If any interfaces have been added, removed, or changed since the
>    last update, increment current, and set revision to 0.

So the age should not be modified in that case.

Related: https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
Change-Id: Idd26781fe458b41469c123b25a51fb2c338c65ec
---
M osmo-release.sh
1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/osmo-release.sh b/osmo-release.sh
index 5d4cb28..61adf57 100755
--- a/osmo-release.sh
+++ b/osmo-release.sh
@@ -244,7 +244,7 @@
 	echo "# In short: https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html#Updating-version-info" >> TODO-RELEASE
 	echo "# LIBVERSION=c:r:a" >> TODO-RELEASE
 	echo "# If the library source code has changed at all since the last update, then increment revision: c:r + 1:a." >> TODO-RELEASE
-	echo "# If any interfaces have been added, removed, or changed since the last update: c + 1:0:0." >> TODO-RELEASE
+	echo "# If any interfaces have been added, removed, or changed since the last update: c + 1:0:a." >> TODO-RELEASE
 	echo "# If any interfaces have been added since the last public release: c:r:a + 1." >> TODO-RELEASE
 	echo "# If any interfaces have been removed or changed since the last public release: c:r:0." >> TODO-RELEASE
 	echo "#library	what			description / commit summary line" >> TODO-RELEASE

