Fix typo: avg -> max #237

1. 
   sipa commented at 1:17 pm on April 12, 2015: contributor
2. Fix typo: avg -> max 6066bb684c
3. 
   gmaxwell commented at 3:26 pm on April 12, 2015: contributor

   “The keys are right next to each other!”

   ACK.

4. sipa merged this on Apr 12, 2015
5. sipa closed this on Apr 12, 2015

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6. sipa referenced this in commit 6099220e7b on Apr 12, 2015

Contributors
sipa gmaxwell