Fix build error for template changes

tools/jsdoc/README.md

@@ -11,10 +11,17 @@ If you would like the extra functionality for gravPrep:
 To generate html documentation for the High Fidelity JavaScript API:
 
 * `cd tools/jsdoc`
-* `jsdoc root.js -c config.json`
+* `jsdoc root.js -r api-mainpage.md -c config.json`
 
 The out folder should contain index.html.
 
+If you get a "JavaScript heap out of memory" error when running the `jsdoc` command you need to increase the amount of memory 
+available to it. For example, to increase the memory available to 2GB on Windows:
+* `where jsdoc` to find the `jsdoc.cmd` file.
+* Edit the `jsdoc.cmd` file to add `--max-old-space-size=2048` after the `node` and/or `node.exe` commands.
+
+Reference: https://medium.com/@vuongtran/how-to-solve-process-out-of-memory-in-node-js-5f0de8f8464c
+
 To generate the grav automation files, run node gravPrep.js after you have made a JSdoc output folder.
 
 This will create files that are needed for hifi-grav and hifi-grav-content repos

tools/jsdoc/config.json

@@ -1,6 +1,5 @@
 {
     "opts": {
-        "readme": "api-mainpage.md",
         "template": "hifi-jsdoc-template"
     },
     "docdash": {