Do not add lts to the title

Signed-off-by: Ihor Aleksandrychiev <ihor.aleksandrychiev@northern.tech>

Author: aleksandrychev

generator/build/main.sh

@@ -121,7 +121,12 @@ sudo chmod -R a+rX "$WRKDIR"/masterfiles
 echo "branch: $BRANCH" >> "$WRKDIR"/documentation/generator/_config.yml
 
 # replace %branch% placeholder with actual branch name
-sed -i "s/%branch%/$BRANCH/g" "$WRKDIR"/documentation/hugo/config.toml
+if [ "$BRANCH" = "lts" ]; then
+    # For lts branch, remove %branch% and the space before it
+    sed -i "s/ %branch%//g" "$WRKDIR"/documentation/hugo/config.toml
+else
+    sed -i "s/%branch%/$BRANCH/g" "$WRKDIR"/documentation/hugo/config.toml
+fi
 
 # Generate syntax data
 ./_regenerate_json.sh || exit 4