Arabic formatting #135

Hi guys @javascript-tutorial/translate-ar,

I found a bunch of errors in formatting, so here's a small note.

1. The quote type matters: a backtick ` should remain backtick `. If there are multiple backticks, please keep exactly the same number.
2. In header=... and src=... - please, no spaces around = (src = "..." is wrong, src="..." is ok)
3. Please, use https://github.com/javascript-tutorial/server to preview your translation.

I fixed some obvious problems, but there must be more, only preview can help to make sure it's ok.