[COMMITTED] stdio-common: Tweak comment in Makefile

[Sam James]

Followup to 5a96da210c15e18c3c5298dc23a9e2e57691b6c6.
---
I missed that the v3 patch for the Clang change didn't include H.J.'s
requested '.', so adding that in.

 stdio-common/Makefile | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/stdio-common/Makefile b/stdio-common/Makefile
index 289ea9dc20..cc3a72f2d2 100644
--- a/stdio-common/Makefile
+++ b/stdio-common/Makefile
@@ -317,9 +317,9 @@ tests := \
   # tests
 
 # Clang 19 takes a very long time, it ran more than 27 minutes on Intel
-# Core i7-1195G7 before the process was killed, to compile bug28.c
-# The issue was fixed in upstream but check if clang has the version that has the fix
-# https://github.com/llvm/llvm-project/commit/99dddef340e566e9d303010f1219f7d7d6d37a11 .
+# Core i7-1195G7 before the process was killed, to compile bug28.c.
+# The issue was fixed in upstream but check if clang has the version that has the fix:
+# https://github.com/llvm/llvm-project/commit/99dddef340e566e9d303010f1219f7d7d6d37a11
 ifneq ($(have-test-clang-19-or-less),yes)
 tests += \
   bug28 \

-- 
2.47.1