runtime(vim): Update base-syntax, match :loadkeymap after colon and bar

Match :loadkeymap after Ex colons and bars.

Don't generate :loadkeymap as it is matched with a custom syntax group.

closes: #15554

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/generator/gen_syntax_vim.vim b/runtime/syntax/generator/gen_syntax_vim.vim
index f887920..480038e 100644
--- a/runtime/syntax/generator/gen_syntax_vim.vim
+++ b/runtime/syntax/generator/gen_syntax_vim.vim
@@ -2,7 +2,7 @@
 " Language: Vim script
 " Maintainer: Hirohito Higashi (h_east)
 " URL: https://github.com/vim-jp/syntax-vim-ex
-" Last Change: 2024 Aug 21
+" Last Change: 2024 Aug 23
 " Version: 2.1.1
 
 let s:keepcpo= &cpo
@@ -305,6 +305,7 @@
 		function
 		insert
 		let
+		loadkeymap
 		map
 		mapclear
 		match
diff --git a/runtime/syntax/generator/vim.vim.base b/runtime/syntax/generator/vim.vim.base
index 4c91df4..2624798 100644
--- a/runtime/syntax/generator/vim.vim.base
+++ b/runtime/syntax/generator/vim.vim.base
@@ -185,7 +185,7 @@
 syn case match
 
 " All vimCommands are contained by vimIsCommand. {{{2
-syn cluster vimCmdList	contains=vimAbb,vimAddress,vimAutoCmd,vimAugroup,vimBehave,vimCall,vimCatch,vimConst,vimDef,@vimEcho,vimEnddef,vimEndfunction,vimExecute,vimIsCommand,vimExtCmd,vimFor,vimFunction,vimGlobal,vimHighlight,vimLet,vimMap,vimMark,vimMatch,vimNotFunc,vimNorm,vimSet,vimSleep,vimSyntax,vimThrow,vimUnlet,vimUnmap,vimUserCmd,vimMenu,vimMenutranslate,@vim9CmdList
+syn cluster vimCmdList	contains=vimAbb,vimAddress,vimAutoCmd,vimAugroup,vimBehave,vimCall,vimCatch,vimConst,vimDef,@vimEcho,vimEnddef,vimEndfunction,vimExecute,vimIsCommand,vimExtCmd,vimFor,vimFunction,vimGlobal,vimHighlight,vimLet,vimLoadkeymap,vimMap,vimMark,vimMatch,vimNotFunc,vimNorm,vimSet,vimSleep,vimSyntax,vimThrow,vimUnlet,vimUnmap,vimUserCmd,vimMenu,vimMenutranslate,@vim9CmdList
 syn cluster vim9CmdList	contains=vim9Const,vim9Final,vim9For,vim9Var
 syn match vimCmdSep	"[:|]\+"	skipwhite nextgroup=@vimCmdList,vimSubst1
 syn match vimIsCommand	"\<\%(\h\w*\|[23]mat\%[ch]\)\>"	contains=vimCommand
@@ -347,7 +347,7 @@
 endif
 syn cluster vimKeymapLineComment contains=vim9\=KeymapLineComment
 
-syn region vimKeymap matchgroup=vimCommand start="\<loadk\%[eymap]\>" end="\%$" contains=vimKeymapStart
+syn region vimLoadkeymap matchgroup=vimCommand start="\<loadk\%[eymap]\>" end="\%$" contains=vimKeymapStart
 
 " Special Filenames, Modifiers, Extension Removal: {{{2
 " ===============================================