Add change log

common/changes/@microsoft/tsdoc/pgonzal-parameter-lookup_2018-10-27-01-43.json

@@ -0,0 +1,11 @@
+{
+  "changes": [
+    {
+      "packageName": "@microsoft/tsdoc",
+      "comment": "(API change) Rename `DocComment.paramBlocks` --> `DocComment.params`",
+      "type": "minor"
+    }
+  ],
+  "packageName": "@microsoft/tsdoc",
+  "email": "pgonzal@users.noreply.github.com"
+}