move docs dependencies to dev (#8121)

package.json

@@ -13,14 +13,10 @@
     "node": ">=6.4.0"
   },
   "dependencies": {
-    "@mapbox/appropriate-images-react": "^1.0.0",
-    "@mapbox/dr-ui": "0.6.0",
     "@mapbox/geojson-rewind": "^0.4.0",
     "@mapbox/geojson-types": "^1.0.2",
     "@mapbox/jsonlint-lines-primitives": "^2.0.2",
     "@mapbox/mapbox-gl-supported": "^1.4.0",
-    "@mapbox/mbx-assembly": "^0.28.2",
-    "@mapbox/mr-ui": "0.5.0",
     "@mapbox/point-geometry": "^0.1.0",
     "@mapbox/tiny-sdf": "^1.1.0",
     "@mapbox/unitbezier": "^0.0.0",
@@ -44,11 +40,15 @@
   },
   "devDependencies": {
     "@mapbox/appropriate-images": "^2.0.0",
+    "@mapbox/appropriate-images-react": "^1.0.0",
     "@mapbox/batfish": "1.9.8",
+    "@mapbox/dr-ui": "0.6.0",
     "@mapbox/flow-remove-types": "^1.3.0-await.upstream.2",
     "@mapbox/gazetteer": "^3.1.2",
     "@mapbox/mapbox-gl-rtl-text": "^0.2.1",
     "@mapbox/mapbox-gl-test-suite": "file:test/integration",
+    "@mapbox/mbx-assembly": "^0.28.2",
+    "@mapbox/mr-ui": "0.5.0",
     "@octokit/rest": "^15.15.1",
     "babel-eslint": "^10.0.1",
     "benchmark": "^2.1.4",