Follow changes in WD-css-scroll-snap-1-20160623

See also: https://www.w3.org/TR/2016/WD-css-scroll-snap-1-20160623/

after/syntax/css/css-scroll-snap-1.vim

@@ -0,0 +1,2 @@
+syn match cssFontProp contained "\<scroll-snap-\(type\|align\|\(\(padding\|margin\)\(-\(top\|bottom\|right\|left\|\(block\|inline\)\(-\(end\|start\)\)\=\)\)\=\)\|stop\)\>"
+syn keyword cssFontAttr contained x y mandatory proximity point

after/syntax/css/css-snappoints-1.vim

@@ -1,2 +0,0 @@
-syn match cssFontProp contained "\<scroll-snap-\(type\|padding\|margin\|align\)\=\>"
-syn keyword cssFontAttr contained mandatory proximity