Fix IDL indenting

[dontcallmedom]

problem caused by overeager tidy in d3f0012
close #2682

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Preview | Diff

[fippo]

i'll call you Sísyphos instead <3

[marcoscaceres]

This is still kinda ugly... why not do just do?:

<pre class="WebIDL">
   interface Foo {
     // other stuff 
   };
</pre> 

Tidy shouldn't touch those and there is no other technical reason not to do them all like the above, AFAIK?

[marcoscaceres]

Renders as:

Which is what we want...