FY2019Q3-QAReview

Updated @microsoft/microsoft-graph-types to 1.7.0.
Fixed various markdown errors.

Author: juliemturner

Demos/01-personal-info/package-lock.json

@@ -22,7 +22,7 @@
     "react-dom": "16.3.2"
   },
   "devDependencies": {
-    "@microsoft/microsoft-graph-types": "^1.5.0",
+    "@microsoft/microsoft-graph-types": "^1.7.0",
     "@microsoft/sp-build-web": "1.7.0",
     "@microsoft/sp-module-interfaces": "1.7.0",
     "@microsoft/sp-tslint-rules": "1.7.0",