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/runtime/doc/syntax.txt b/runtime/doc/syntax.txt
index 5e290ec..cc04c59 100644
--- a/runtime/doc/syntax.txt
+++ b/runtime/doc/syntax.txt
@@ -1,4 +1,4 @@
-*syntax.txt*	For Vim version 9.1.  Last change: 2024 Apr 08
+*syntax.txt*	For Vim version 9.1.  Last change: 2024 Apr 09
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -2532,7 +2532,7 @@
 
 To use italics and strong in emphases. Default = 1 >
 
-	:let *g:pandoc#syntax#style#emphases = 1
+	:let g:pandoc#syntax#style#emphases = 1
 
 "0" will add "block" to g:pandoc#syntax#conceal#blacklist, because otherwise
 you couldn't tell where the styles are applied.