Porting in minimal content for functions.config() reference (#582)

* I persist in trying to fix links.

* Adding comments for functions.config() along with a change that somehow evaded my last update to storage.ts.

* Adding new entry for new config.Config.html file.

* Removing circular link per review.

Author: egilmorez

docgen/content-sources/toc.yaml

@@ -20,6 +20,8 @@ toc:
     section:
       - title: 'Config'
         path: /docs/reference/functions/config_.config.html
+      - title: 'config.Config'
+        path: /docs/reference/functions/config_.config.config.html
 
   - title: 'functions.analytics'
     path: /docs/reference/functions/providers_analytics_.html

src/config.ts

@@ -29,9 +29,18 @@ export function config(): config.Config {
   return config.singleton;
 }
 
+/**
+ * Store and retrieve project configuration data such as third-party API
+ * keys or other settings. You can set configuration values using the
+ * Firebase CLI as described in
+ * [Environment Configuration](/docs/functions/config-env).
+ */
 export namespace config {
-  // Config type is usable as a object (dot notation allowed), and firebase
-  // property will also code complete.
+  /**
+   * The Functions configuration interface.
+   *
+   * Access via `functions.config()`.
+   */
   export interface Config {
     [key: string]: any;
   }

src/providers/storage.ts

@@ -84,7 +84,7 @@ export function _objectWithOptions(options: DeploymentOptions): ObjectBuilder {
 /**
  * The Google Cloud Storage bucket builder interface.
  *
- * Access via [`functions.storage.bucket()`](functions.storage#.bucket).
+ * Access via [`functions.storage.bucket()`](providers_storage_.html#bucket).
  */
 export class BucketBuilder {
   /** @hidden */
@@ -107,7 +107,7 @@ export class BucketBuilder {
 /**
  * The Google Cloud Storage object builder interface.
  *
- * Access via [`functions.storage.object()`](functions.storage#.object).
+ * Access via [`functions.storage.object()`](providers_storage_.html#object).
  */
 export class ObjectBuilder {
   /** @hidden */