ci: fix typo in .travis.yml

Author: markus-wa

.travis.yml

@@ -51,7 +51,7 @@ script:
   # Run race tests
   - go test -v -race -run "$race_tests" -timeout 15m
 
-  # We run all tests again to get full coverage, technically unncecessary tho
+  # We run all tests again to get full coverage, technically unnecessary tho
   - coverpkg_ignore='/(msg|fake)'
   # coverpkg for multiple mains is broken in 1.12, so we need to exclude the examples from coverage
   # https://github.com/golang/go/issues/30374