patch 8.2.2889: typo and verbose comment in Makefiles

Problem:    Typo and verbose comment in Makefiles.
Solution:   Fix typo. Use @#. (Ken Takata, closes #8252)

src/testdir/Makefile

@@ -40,7 +40,7 @@ tiny:	nolog tinytests report
 benchmark: $(SCRIPTS_BENCH)
 
 report:
-	# without the +eval feature test_result.log is a copy of test.log
+	@# without the +eval feature test_result.log is a copy of test.log
 	@/bin/sh -c "if test -f test.log; \
 		then cp test.log test_result.log; \
 		else echo No failures reported > test_result.log; \

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2889,
 /**/
     2888,
 /**/