Fixed some typos and formatting issues in docs

doc/Developing/Code-Structure.md

@@ -41,7 +41,7 @@ All the discovery and polling code. The format is usually quite similar between
 This is for all of the libraries used by LibreNMS. If you are including a 3rd party module, you would add the files in here either via git subtree if it's hosted on GitHub or just by copying the folder. Please ensure you maintain any copyright notices. You will then need to either reference the files in this folder directly from where you need them or alternatively as is the case with css and js libraries then symlink the needed files.
 
 ### logs/
-Usually contains your web servers logs but can also contrain poller logs and other items,
+Usually contains your web servers logs but can also contain poller logs and other items,
 
 ### mibs/
 Here is where all of the mibs are located, traditionally this has meant having all mibs in one directory but for certain vendors this has changed and these are now located in sub folders.

doc/Developing/Style-Guidelines.md

@@ -6,7 +6,7 @@ the users interest that a consistent well thought out Web UI is available.
 ### Responsiveness
 
 The Web UI is designed to be mobile friendly and for the most part is and works well. It's worth spending sometime to
-read through the [Boostrap website](http://getbootstrap.com/css/#grid) to learn more about how to keep things responsive.
+read through the [Bootstrap website](http://getbootstrap.com/css/#grid) to learn more about how to keep things responsive.
 
 ### Navigation bar
 

doc/Developing/Using-Git.md

@@ -53,7 +53,7 @@ Now you have two configured remotes:
 As you become more familiar you may find a better workflow that fits your needs, until then this should be a safe
 workflow for you to follow.
 
-Before you start work on a new branch / feature. Make sure you are upto date.
+Before you start work on a new branch / feature. Make sure you are up to date.
 ```bash
 cd /opt/librenms
 git checkout master