fix(colors): fix floating markdown highlights

Further patches may be necessary.

colors/highlite.lua

@@ -573,18 +573,23 @@ local highlight_groups = {
 	makeSpecTarget = 'Type',
 
 	--[[ 4.3.13. Markdown ]]
+	markdownCode = 'mkdCode',
+	markdownCodeDelimiter = 'mkdCodeDelimiter',
 	markdownH1 = {fg=red, style='bold'},
 	markdownH2 = {fg=orange, style='bold'},
 	markdownH3 = {fg=yellow, style='bold'},
 	markdownH4 = {fg=green_dark, style='bold'},
 	markdownH5 = {fg=cyan, style='bold'},
 	markdownH6 = {fg=purple_light, style='bold'},
+	markdownLinkDelimiter = 'Delimiter',
+	markdownLinkTextDelimiter = 'markdownLinkDelimiter',
+	markdownUrl = 'Underlined',
 	mkdBold = 'Ignore',
 	mkdBoldItalic = 'mkdBold',
 	mkdCode = 'Keyword',
 	mkdCodeDelimiter = 'mkdBold',
-	mkdCodeStart = 'mkdCodeDelimiter',
 	mkdCodeEnd = 'mkdCodeStart',
+	mkdCodeStart = 'mkdCodeDelimiter',
 	mkdHeading = 'Delimiter',
 	mkdItalic  = 'mkdBold',
 	mkdLineBreak = 'NonText',