Add link to Bokeh tutorial notebooks (#7859)
Add link to Bokeh tutorial notebooks (#7859)

* Add link to Bokeh tutorial notebooks

* Expand example notebook section

* Update notebook.rst

* Update notebook.rst

ericmjl/bokeh,mindriot101/bokeh,mindriot101/bokeh,dennisobrien/bokeh,ericmjl/bokeh,ericmjl/bokeh,bokeh/bokeh,timsnyder/bokeh,timsnyder/bokeh,jakirkham/bokeh,ericmjl/bokeh,timsnyder/bokeh,mindriot101/bokeh,timsnyder/bokeh,stonebig/bokeh,bokeh/bokeh,stonebig/bokeh,jakirkham/bokeh,bokeh/bokeh,timsnyder/bokeh,dennisobrien/bokeh,dennisobrien/bokeh,stonebig/bokeh,bokeh/bokeh,jakirkham/bokeh,stonebig/bokeh,dennisobrien/bokeh,jakirkham/bokeh,mindriot101/bokeh,dennisobrien/bokeh,ericmjl/bokeh,jakirkham/bokeh,bokeh/bokeh