Improve documentation.

Author: iclanton

libraries/rush-sdk/src/index.ts

@@ -33,8 +33,10 @@ declare const global: NodeJS.Global &
 
 function _require<TResult>(moduleName: string): TResult {
   if (typeof __non_webpack_require__ === 'function') {
-    // If this library has been webpacked, we need to call the real `require` function
-    // that doesn't get turned into a __webpack_require__ statement
+    // If this library has been bundled with Webpack, we need to call the real `require` function
+    // that doesn't get turned into a `__webpack_require__` statement.
+    // `__non_webpack_require__` is a Webpack macro that gets turned into a `require` statement
+    // during bundling.
     return __non_webpack_require__(moduleName);
   } else {
     return require(moduleName);