[openwrt/openwrt] CI: allow dots in commit subject area

[LEDE Commits]

aparcar pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/fb5d0dc362e5206dbedb694dbe27953582eb887b

commit fb5d0dc362e5206dbedb694dbe27953582eb887b
Author: Paul Spooren <mail at aparcar.org>
AuthorDate: Wed Feb 23 19:51:43 2022 +0100

    CI: allow dots in commit subject area
    
    Due to a limited grep pattern, subjects containing dots like `image.mk`
    were falsely reported as problematic. Extend pattern to allow dots.
    
    Signed-off-by: Paul Spooren <mail at aparcar.org>
---
 .github/workflows/formal.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.github/workflows/formal.yml b/.github/workflows/formal.yml
index 74e8fd6942..5046b5a180 100644
--- a/.github/workflows/formal.yml
+++ b/.github/workflows/formal.yml
@@ -43,7 +43,7 @@ jobs:
             fi
 
             subject="$(git show -s --format=%s $commit)"
-            if echo "$subject" | grep -q -e '^[0-9A-Za-z,+/_-]\+: ' -e '^Revert '; then
+            if echo "$subject" | grep -q -e '^[0-9A-Za-z,+/_\.-]\+: ' -e '^Revert '; then
               success "Commit subject line seems ok ($subject)"
             else
               err "Commit subject line MUST start with '<area>: ' ($subject)"