Fix typos in docs and guidelines

Signed-off-by: Daniel Davison <[email protected]>

Author: customcommander

CONTRIBUTING.md

@@ -123,7 +123,7 @@ Create a feature branch and start hacking:
 % git checkout -b my-feature-branch
 ```
 
-We practice HEAD-based development, which means all changes are aplied
+We practice HEAD-based development, which means all changes are applied
 directly on top of master.
 
 ### Step 3: Commit

javascript/node/selenium-webdriver/safari.js

@@ -19,7 +19,7 @@
  * @fileoverview Defines a WebDriver client for Safari. Before using this
  * module, you must install the
  * [latest version](http://selenium-release.storage.googleapis.com/index.html)
- * of the SafariDriver browser extension; using Safari for normal browsign is
+ * of the SafariDriver browser extension; using Safari for normal browsing is
  * not recommended once the extension has been installed. You can, and should,
  * disable the extension when the browser is not being used with WebDriver.
  */