Update badges for scoped package

[cjbarth]

Description

Fix some typos in the README for the new badges.

[codecov]

Codecov Report

Merging #710 (5c00f4c) into master (4065e77) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #710   +/-   ##
=======================================
  Coverage   65.10%   65.10%           
=======================================
  Files           4        4           
  Lines         149      149           
  Branches       37       37           
=======================================
  Hits           97       97           
  Misses         29       29           
  Partials       23       23           

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