runtime: Fix typos in various files

closes: #12836

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Viktor Szépe <viktor@szepe.net>
diff --git a/runtime/syntax/sgml.vim b/runtime/syntax/sgml.vim
index 00d58d1..ed8fa8c 100644
--- a/runtime/syntax/sgml.vim
+++ b/runtime/syntax/sgml.vim
@@ -294,7 +294,7 @@
 hi def link sgmlTodo			Todo
 hi def link sgmlTag			Function
 hi def link sgmlEndTag			Identifier
-" SGML specifig
+" SGML specific
 hi def link sgmlAbbrEndTag		Identifier
 hi def link sgmlEmptyTag		Function
 hi def link sgmlEntity			Statement