Bump Prettier to 1.16.4

Summary:
@public
This bumps Prettier to v1.16.4
Only format source files were updated.

Reviewed By: mjesun

Differential Revision: D14454893

fbshipit-source-id: 72f9872fe764a79dbf0d9fab9bebb1456b039f2f

package.json

@@ -64,7 +64,7 @@
     "glob": "^7.1.2",
     "jest": "^24.1.0",
     "jest-fetch-mock": "^2.1.0",
-    "prettier": "1.13.6",
+    "prettier": "1.16.4",
     "redux-mock-store": "^1.5.3"
   },
   "dependencies": {

yarn.lock

@@ -5653,9 +5653,10 @@ prettier-linter-helpers@^1.0.0:
   dependencies:
     fast-diff "^1.1.2"
 
-prettier@1.13.6:
-  version "1.13.6"
-  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.13.6.tgz#00ae0b777ad92f81a9e7a1df2f0470b6dab0cb44"
+prettier@1.16.4:
+  version "1.16.4"
+  resolved "https://registry.yarnpkg.com/prettier/-/prettier-1.16.4.tgz#73e37e73e018ad2db9c76742e2647e21790c9717"
+  integrity sha512-ZzWuos7TI5CKUeQAtFd6Zhm2s6EpAD/ZLApIhsF9pRvRtM1RFo61dM/4MSRUA0SuLugA/zgrZD8m0BaY46Og7g==
 
 prettier@^1.14.2:
   version "1.14.3"