fix error with link highlighting and external links (#7747)
fix error with link highlighting and external links (#7747)


mindriot101/bokeh,stonebig/bokeh,jakirkham/bokeh,Karel-van-de-Plassche/bokeh,dennisobrien/bokeh,timsnyder/bokeh,dennisobrien/bokeh,timsnyder/bokeh,bokeh/bokeh,bokeh/bokeh,aavanian/bokeh,aavanian/bokeh,dennisobrien/bokeh,mindriot101/bokeh,timsnyder/bokeh,dennisobrien/bokeh,Karel-van-de-Plassche/bokeh,stonebig/bokeh,stonebig/bokeh,jakirkham/bokeh,ericmjl/bokeh,jakirkham/bokeh,bokeh/bokeh,Karel-van-de-Plassche/bokeh,mindriot101/bokeh,dennisobrien/bokeh,ericmjl/bokeh,Karel-van-de-Plassche/bokeh,Karel-van-de-Plassche/bokeh,ericmjl/bokeh,mindriot101/bokeh,aavanian/bokeh,timsnyder/bokeh,stonebig/bokeh,ericmjl/bokeh,jakirkham/bokeh,bokeh/bokeh,timsnyder/bokeh,bokeh/bokeh,ericmjl/bokeh,aavanian/bokeh,aavanian/bokeh,jakirkham/bokeh