Clean up `bazel help coverage`
Remove blaze references and add a missing "a".
RELNOTES: None.
-Usage: blaze %{command} <options> <test-targets>
+Usage: %{product} %{command} <options> <test-targets>
Builds and runs the specified test targets using the specified options while
-collecting code coverage statistics. Optionally, it also generates combined
+collecting code coverage statistics. Optionally, it also generates a combined
HTML report containing coverage results for all executed tests.
This command accepts all valid options to 'test' and 'build', and inherits
-defaults for 'test' (and 'build') from your .blazerc. If you don't use
-.blazerc, don't forget to pass all your 'build' options to '%{command}' too.
+defaults for 'test' (and 'build') from your .%{product}rc. If you don't use
+.%{product}rc, don't forget to pass all your 'build' options to '%{command}'
+too.
-See 'blaze help target-syntax' for details and examples on how to
+See '%{product} help target-syntax' for details and examples on how to
specify targets.
%{options}
