Update README.md. Corrected Motörhead spelling. (#307)

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README.md

@@ -58,7 +58,7 @@ Each lemmy server can set its own moderation policy; appointing site-wide admins
 
 ## Why's it called Lemmy?
 
-- Lead singer from [motorhead](https://invidio.us/watch?v=pWB5JZRGl0U).
+- Lead singer from [Motörhead](https://invidio.us/watch?v=pWB5JZRGl0U).
 - The old school [video game](<https://en.wikipedia.org/wiki/Lemmings_(video_game)>).
 - The [Koopa from Super Mario](https://www.mariowiki.com/Lemmy_Koopa).
 - The [furry rodents](http://sunchild.fpwc.org/lemming-the-little-giant-of-the-north/).