Merge pull request #20 from devcontainers/bamurtaugh-schema

Update json_schema.md

Author: bamurtaugh

_implementors/features.md

@@ -66,7 +66,7 @@ Options
 
 ## <a href="#devcontainer-json-properties" name="devcontainer-json-properties" class="anchor"> devcontainer.json properties </a>
 
-Features are referenced in a user's [`devcontainer.json`](devcontainer-reference#devcontainerjson) under the top level `features` object. 
+Features are referenced in a user's [`devcontainer.json`](../json_reference) under the top level `features` object.
 
 A user can specify an arbitrary number of features.  At build time, these features will be installed in an order defined by a combination of the [installation order rules and implementation](#Installation-Order). 
 
@@ -269,4 +269,4 @@ There are several things to keep in mind for an application that implements feat
 - Parameters like `privileged`, `init` are included if just 1 feature requires them.
 - Parameters like `capAdd`, `securityOp`  are concatenated.
 - `containerEnv` is added before the feature is executed as `ENV` commands in the Dockerfile.
-- Each feature script executes as its own layer to aid in caching and rebuilding.
+- Each feature script executes as its own layer to aid in caching and rebuilding.