Expand contractions: wrong substitution

[lahwaacz]

On the Kernels page, the plugin substitutes O'Reilley into O areilly.

[kynikos]

Thanks, this is why the plugin is not in the bot, it's hard to predict all the cases :) It should be safe to fix this by checking that 're is not followed by a letter: 're[^a-z]. This isn't urgent, I might release the fix together with others instead of making a special release.