fix: typescript error in AppConfig

Author: hkong-mitre

src/adapters/config/AppConfig.ts

@@ -64,7 +64,7 @@ export class AppConfig {
   // static getSecret(secretKey:string): string {}
 
 
-  /** sets `"path": "value"` to config, specifically, to `appConfig.path`
+  /** sets `{"path": "value"}` to config, specifically, to `appConfig.path`
    *  Note this does not actually change the values in the file, but only in
    *  the in-memory "cache"
    *  @param path the path to the key in appConfig.  Do not use `{}:.;` in the key name,
@@ -73,7 +73,6 @@ export class AppConfig {
    *              `appConfig`
    */
   static set(path:string, value: string): void {
-    config.appConfig[path]=value
-    // AppConfig._sVariables[path] = variable
+    config['appConfig'][path] = value
   }
 }