Addressed review comments from @redorav

Author: nickclark2016

src/base/oven.lua

@@ -649,7 +649,7 @@
 			wks = wks,
 			sln = wks,
 			prj = prj,
-      usage = usage,
+			usage = usage,
 		}
 
 		local ctx = context.new(usage or prj or wks, environ)

website/docs/usage.md

@@ -9,7 +9,7 @@ The `usage` API is used to define configuration to be consumed by the `uses` API
 
 ### Magic Usage Blocks ###
 
-1. `PRIVATE` - Private specifies a configuration to be automatically applied to the project defining the `usage` block. This block is inaccessible to be consumed by `uses`.
+1. `PRIVATE` - Private specifies a configuration to be automatically applied to the project defining the `usage` block. This block is inaccessible to be consumed by `uses`. This is the equivalent of defining configuration inside the project directly.
 2. `INTERFACE` - Interface has the opposite meaning as private usages. An interface usage is applied only to those projects consuming it via `uses`. Interface usage blocks are consumed by specfiying the containing project's name in the `uses` list.
 3. `PUBLIC` - Public specifies a configuration to be automatically applied to the project defining the `usage` block and any project consuming it via `uses`. Like `INTERFACE`, it is consumed by specifying the name of the project it is defined in.