change submodule to fork, add step to README, fix typo in README

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "beautifulhugo"]
 	path = themes/beautifulhugo
-	url = https://github.com/halogenica/beautifulhugo.git
+	url = https://github.com/cccb/beautifulhugo.git

README.md

@@ -4,8 +4,9 @@ Running a dev setup
 * Get Hugo: <https://gohugo.io/getting-started/installing>
 * Clone this repo:: `git clone https://github.com/cccb/www`
 * Switch directory: `cd www`
+* Fetch Submodules: `git submodule update --recursive --remote`
 * run hugo webserver: `hugo serve`
 * Point your browser to `http://localhost:1313`
 
-Every change you make on the projet will be reflected in your browser as
+Every change you make on the project will be reflected in your browser as
 long as `hugo serve` is running.