SVG by default (#3717)

Make cleaner badge URLs by omitting the `.svg` extension.

Closes #2674

package.json

@@ -34,6 +34,7 @@
     "decamelize": "^3.2.0",
     "dotenv": "^8.0.0",
     "emojic": "^1.1.15",
+    "escape-string-regexp": "^2.0.0",
     "fast-xml-parser": "^3.12.16",
     "fsos": "^1.1.6",
     "gh-badges": "file:gh-badges",
@@ -171,7 +172,6 @@
     "danger-plugin-no-test-shortcuts": "^2.0.0",
     "enzyme": "^3.10.0",
     "enzyme-adapter-react-16": "^1.14.0",
-    "escape-string-regexp": "^2.0.0",
     "eslint": "^5.16.0",
     "eslint-config-prettier": "^6.0.0",
     "eslint-config-standard": "^12.0.0",