patch 8.1.2355: test with "man" fails on FreeBSD

Problem:    Test with "man" fails on FreeBSD.
Solution:   Use "-P" instead of "--pager".

src/testdir/test_normal.vim

@@ -1204,8 +1204,8 @@ func Test_normal23_K()
     return
   endif
 
-  if has('mac')
-    " In MacOS, the option for specifying a pager is different
+  if has('mac') || has('bsd')
+    " In MacOS and BSD, the option for specifying a pager is different
     set keywordprg=man\ -P\ cat
   else
     set keywordprg=man\ --pager=cat

src/version.c

@@ -737,6 +737,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2355,
 /**/
     2354,
 /**/