tests: add the missing space to test-hghave.t (issue6762) stable

tests: add the missing space to test-hghave.t (issue6762)

log() in run-tests.py add a space to the end of all messages that it prints,
and I missed this fact in my previous patch.

--- a/tests/test-hghave.t	Mon Nov 28 16:10:30 2022 +0400
+++ b/tests/test-hghave.t	Thu Dec 01 15:27:11 2022 +0400
@@ -25,7 +25,7 @@
   > "$PYTHON" $TESTDIR/run-tests.py --with-hg=$HGTEST_REAL_HG -j 1 \
   >    $HGTEST_RUN_TESTS_PURE test-hghaveaddon.t \
   > )
-  installed Mercurial in * seconds (glob) (?)
+  installed Mercurial in * seconds  (glob) (?)
   running 1 tests using 1 parallel processes 
   .
   # Ran 1 tests, 0 skipped, 0 failed.