Fix Blaze Pro from apply global font family (#92006)

* Fix no-literal-urls eslint

client/layout/masterbar/blaze-pro.scss

@@ -15,7 +15,8 @@
 $inter: Inter, $sans;
 $sfProText: "SF Pro Text", $sans;
 
-* {
+.blaze-pro,
+.is-blaze-pro {
 	font-family: $inter;
 }
 

config/README.md

@@ -29,7 +29,7 @@ You can search for feature flags by partial string or regular expression with th
 
 Run `yarn feature-search [search]` from the root calypso directory to see example searches.
 
-You can also activate feature flags only in your development environment. To do this, create a `.env` file in the root folder of the cloned repository. Add the variable `ACTIVE_FEATURE_FLAGS`, and specify the feature flags you want to activate, as a string separated by commas. For more details of how to create the `.env` file, see https://github.com/mrsteele/dotenv-webpack#create-a-env-file.
+You can also activate feature flags only in your development environment. To do this, create a `.env` file in the root folder of the cloned repository. Add the variable `ACTIVE_FEATURE_FLAGS`, and specify the feature flags you want to activate, as a string separated by commas. For more details of how to create the `.env` file, see <https://github.com/mrsteele/dotenv-webpack#create-a-env-file>.
 
 ### Progression of Environments