Update src/plugins/markdown-page.coffee
Update src/plugins/markdown-page.coffee

minor regex optimization
jmptrader/wintersmith,pridemusvaire/wintersmith,pridemusvaire/wintersmith,mimiflynn/wintersmith,MorJar/wintersmith,jmptrader/wintersmith,taras/embersmith,1upon0/wintersmith,MorJar/wintersmith,mimiflynn/wintersmith,cwhatley/wintersmith,jnordberg/wintersmith