Fix typo in README.md and CHANGELOG.md files (#3064)

The change involves correction in the following:
a closing parenthesis was omitted in changelog.md file and a misspelling was made in Readme.md file.

CHANGELOG.md

@@ -65,7 +65,7 @@
 
 ## 7.0.0 (February 8, 2019)
 
-- Drop support for IE9/IE10 (usage of these versions is tiny and Microsoft officially ended support back in 2016. ([#2074](https://github.com/h5bp/html5-boilerplate/pull/2074))
+- Drop support for IE9/IE10 (usage of these versions is tiny and Microsoft officially ended support back in 2016). ([#2074](https://github.com/h5bp/html5-boilerplate/pull/2074))
 - Move the CSS to a separate repo ([#2066](https://github.com/h5bp/html5-boilerplate/pull/2066))
 - Add theme-color meta tag to index.html ([#2074](https://github.com/h5bp/html5-boilerplate/pull/2074))
 - Add 'install with yarn' steps to README ([#2063](https://github.com/h5bp/html5-boilerplate/pull/2063))

README.md

@@ -31,7 +31,7 @@ Think of it this way, in the same way that you don't clone [vuejs/core](https://
 to create a Vue.js app, you don't need to clone this repository to start a new
 site or app based on HTML5 Boilerplate.
 
-So, if you're looking for a quick start template to build a web site or
+So, if you're looking for a quick start template to build a website or
 application, look at the options in the
 [Quick Start](https://github.com/h5bp/html5-boilerplate#quick-start) section of this document.