Fix the abuse of backticks foisted upon the README by GFM.

https://git.debu.gs/gitweb/?p=watts;a=commitdiff;h=c0e3987c95c97c088aedc53e426b46e53726cee6
code, git.debu.gs | 2017-07-05 05:27:09 +0000 GMT | No.731 
Fix the abuse of backticks foisted upon the README by GFM.

Made the text read worse in the only environment that actually matters:  the
text editor.
  • [DH] README