Update version updating hook

To not include commit hash, as it's always commit prior the desired one

Author: Jorenar

.githooks/pre-commit

@@ -2,7 +2,8 @@
 
 if ! git diff --quiet --cached "git-fmt-diff"; then
     if ! git diff --cached -U0 git-fmt-diff | grep -q 'gc_version'; then
-        ver="$(git describe --always --long | sed 's/^v//')+1"
+        ver="$(git describe --always --long | sed 's/^v//')"
+        ver="${ver%-*}"
         echo "Updating script version string to $ver"
         sed -i 's/^gc_version=".*"/gc_version="'"$ver"'"/' git-fmt-diff
         git add git-fmt-diff