patch 9.1.0282: Several small issues in doc and tests

Problem:  Wrong doc style for pandoc syntax description,
          Test_diff_eob_halfpage() may fail depending on
          screen size, using braces in highlight.c when
          not necessary
Solution: Fix pandoc documentation, make sure the window
          for the test has 7 lines, remove the braces.

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/highlight.c b/src/highlight.c
index d874032..54e348d 100644
--- a/src/highlight.c
+++ b/src/highlight.c
@@ -2543,9 +2543,7 @@
     target.length = 0;		// not used, see cmp_keyvalue_value_i()
     entry = (keyvalue_T *)bsearch(&target, &rgb_tab, ARRAY_LENGTH(rgb_tab), sizeof(rgb_tab[0]), cmp_keyvalue_value_i);
     if (entry != NULL)
-    {
 	return gui_adjust_rgb((guicolor_T)entry->key);
-    }
 
 #if defined(FEAT_EVAL)
     /*
diff --git a/src/testdir/test_diffmode.vim b/src/testdir/test_diffmode.vim
index 9e973de..f28e840 100644
--- a/src/testdir/test_diffmode.vim
+++ b/src/testdir/test_diffmode.vim
Binary files differ
diff --git a/src/version.c b/src/version.c
index 27ebd69..dc9f775 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    283,
+/**/
     282,
 /**/
     281,