Fix wording (#725)

README.md

@@ -95,15 +95,15 @@ to manage Node.js versions on your machine.
 
 ### Build
 
-    $ npm run build
+   $ npm run build
 
 This command generates static content into the `build` directory and can be served using any static
 contents hosting service.
 
 ### Adding new words to the dictionary
 
 This repository includes a _linter_, which you can think of as a spell-check that also checks code
-formatting and standards, and a lot more. It's possible that you will use a word in your content
+formatting and standards, and a lot more. It's possible that you might use a word in your content
 that is not known to the linter, and your build, or commit, will fail.
 
 You can run the linter any time with the command `npm run lint`.