Typos and path fixups (10202)

Documentation/GettingStarted.md

 
 ## The game
 
-The FPS Sample is multiplayer only game. There is no single player mode and
+The FPS Sample is a multiplayer only game. There is no single player mode and
 you cannot play the game without being connected to a server. It is a pretty
 traditional shooter game with two different characters: The Terraformer and
 The Robot. Each have their own weapon with a primary and secondary fire mode.

README.md

-![](Documentation/Images/banner.png)
+![](Documentation/Images/Banner.png)
 
 # FPS Sample
 
 
 It should look like this:
 
-![](Documentation/Images/projecttools.png)
+![](Documentation/Images/ProjectTools.png)
 
 Keep this window docked as you will use it a lot. From here you can open the
 levels, build assetbundles and build standalone players. Because this is a