Update docs.md

Added some things to make more clear.  I got errors following instructions.  But with changes noted here, it worked.

Author: jendefig

content/docs/user-guide/contributing/docs.md

@@ -59,7 +59,7 @@ the website engine itself. Source code and content files need to be properly
 formatted and linted as well, which is also ensured by the full setup below.
 
 Make sure you have a recent LTS version of [Node.js](https://nodejs.org/en/)
-(`>=12.0.0`), and install [Yarn](https://yarnpkg.com/):
+(`>=12.0.0`).  Navigate to your local gitcloned directory and install [Yarn](https://yarnpkg.com/):
 
 ```dvc
 $ npm install -g yarn
@@ -71,6 +71,12 @@ Install the project dependencies with Yarn:
 $ yarn
 ```
 
+You may need to resolve dependencies at this point by running:
+
+```dvc
+$ npm install
+```
+
 Launch the server locally with:
 
 ```dvc