Now we match `|g:FooBar|` and `|.vimrc|`, which we failed to do before.
syntax match docvimAnnotation '@private' containedin=docvimBlock contained
syntax match docvimBackticks '\v`[^\s`]+`' containedin=docvimBlock contained
syntax match docvimBlockquote '\v^\s*"\s+\zs\>\s+.+$' containedin=docvimBlock contained
-syntax match docvimCrossReference '\v\c\|:?[a-z0-9()<>-]+\|' containedin=docvimBlock contained
+syntax match docvimCrossReference '\v\c\|:?[a-z0-9()<>\.:-]+\|' containedin=docvimBlock contained
syntax match docvimHeading '\v^\s*"\s+\zs#\s+.+$' containedin=docvimBlock contained
syntax match docvimPreComment '\v^\s*"' containedin=docvimPre contained
syntax match docvimSetting "\v'[a-z]{2,}'" containedin=docvimBlock contained