Fix example URL inconsistency
Fix example URL inconsistency

In case of the GitHub example links like `<a href="https://github.com/{{ org.username }}">` with the full URL plus the variable were used, but for the Twitter example link only the `{{  author.name }}` was set as `href`.
alex-kovac/jekyll,tillgrallert/jekyll,rlugojr/jekyll,ryanshaw/jekyll,rasa2011/rasa2011.github.io,darwin/jekyll,Strangehill/jekyll,rlugojr/jekyll,ZDroid/jekyll,Strangehill/jekyll,getandpost/jekyll.github.io,darwin/jekyll,xiebinhqy/jklly_china,chrisfinazzo/jekyll,jekyll/jekyll,darwin/jekyll,rlugojr/jekyll,tillgrallert/jekyll,fulldecent/jekyll,jekyll/jekyll,Strangehill/jekyll,fulldecent/jekyll,jekyll/jekyll,tillgrallert/jekyll,gencer/jekyll,getandpost/jekyll.github.io,x-way/jekyll,chrisfinazzo/jekyll,alex-kovac/jekyll,tomjohnson1492/jekyll,Strangehill/jekyll,xiebinhqy/jklly_china,gencer/jekyll,ryanshaw/jekyll,tomjohnson1492/jekyll,jaybe-jekyll/jekyll,tomjohnson1492/jekyll,alfredxing/jekyll,alex-kovac/jekyll,jekyll/jekyll,gencer/jekyll,alfredxing/jekyll,alfredxing/jekyll,yhironaka/yhironaka.github.io,chrisfinazzo/jekyll,x-way/jekyll,gencer/jekyll,ryanshaw/jekyll,getandpost/jekyll.github.io,fulldecent/jekyll,xiebinhqy/jklly_china,chrisfinazzo/jekyll,ZDroid/jekyll,gencer/jekyll,xiebinhqy/jklly_china,rasa2011/rasa2011.github.io,alfredxing/jekyll,Strangehill/jekyll,jaybe-jekyll/jekyll,rlugojr/jekyll,jaybe-jekyll/jekyll,tillgrallert/jekyll,rasa2011/rasa2011.github.io,darwin/jekyll,jaybe-jekyll/jekyll,tomjohnson1492/jekyll,x-way/jekyll,ryanshaw/jekyll,tomjohnson1492/jekyll,tillgrallert/jekyll,alex-kovac/jekyll,x-way/jekyll,ZDroid/jekyll,alex-kovac/jekyll,fulldecent/jekyll