Bump browserslist from 4.6.0 to 4.16.6 in /docs

Bumps [browserslist](https://github.com/browserslist/browserslist) from 4.6.0 to 4.16.6.
- [Release notes](https://github.com/browserslist/browserslist/releases)
- [Changelog](https://github.com/browserslist/browserslist/blob/main/CHANGELOG.md)
- [Commits](https://github.com/browserslist/browserslist/compare/4.6.0...4.16.6)

Signed-off-by: dependabot[bot] <support@github.com>

docs/package-lock.json

@@ -1278,14 +1278,36 @@
       }
     },
     "browserslist": {
-      "version": "4.6.0",
-      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.6.0.tgz",
-      "integrity": "sha512-Jk0YFwXBuMOOol8n6FhgkDzn3mY9PYLYGk29zybF05SbRTsMgPqmTNeQQhOghCxq5oFqAXE3u4sYddr4C0uRhg==",
+      "version": "4.16.6",
+      "resolved": "https://registry.npmjs.org/browserslist/-/browserslist-4.16.6.tgz",
+      "integrity": "sha512-Wspk/PqO+4W9qp5iUTJsa1B/QrYn1keNCcEP5OvP7WBwT4KaDly0uONYmC6Xa3Z5IqnUgS0KcgLYu1l74x0ZXQ==",
       "dev": true,
       "requires": {
-        "caniuse-lite": "^1.0.30000967",
-        "electron-to-chromium": "^1.3.133",
-        "node-releases": "^1.1.19"
+        "caniuse-lite": "^1.0.30001219",
+        "colorette": "^1.2.2",
+        "electron-to-chromium": "^1.3.723",
+        "escalade": "^3.1.1",
+        "node-releases": "^1.1.71"
+      },
+      "dependencies": {
+        "caniuse-lite": {
+          "version": "1.0.30001230",
+          "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30001230.tgz",
+          "integrity": "sha512-5yBd5nWCBS+jWKTcHOzXwo5xzcj4ePE/yjtkZyUV1BTUmrBaA9MRGC+e7mxnqXSA90CmCA8L3eKLaSUkt099IQ==",
+          "dev": true
+        },
+        "electron-to-chromium": {
+          "version": "1.3.739",
+          "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.739.tgz",
+          "integrity": "sha512-+LPJVRsN7hGZ9EIUUiWCpO7l4E3qBYHNadazlucBfsXBbccDFNKUBAgzE68FnkWGJPwD/AfKhSzL+G+Iqb8A4A==",
+          "dev": true
+        },
+        "node-releases": {
+          "version": "1.1.72",
+          "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.72.tgz",
+          "integrity": "sha512-LLUo+PpH3dU6XizX3iVoubUNheF/owjXCZZ5yACDxNnPtgFuludV1ZL3ayK1kVep42Rmm0+R9/Y60NQbZ2bifw==",
+          "dev": true
+        }
       }
     },
     "buffer-alloc": {
@@ -1410,12 +1432,6 @@
         }
       }
     },
-    "caniuse-lite": {
-      "version": "1.0.30000971",
-      "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30000971.tgz",
-      "integrity": "sha512-TQFYFhRS0O5rdsmSbF1Wn+16latXYsQJat66f7S7lizXW1PVpWJeZw9wqqVLIjuxDRz7s7xRUj13QCfd8hKn6g==",
-      "dev": true
-    },
     "capture-stack-trace": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/capture-stack-trace/-/capture-stack-trace-1.0.1.tgz",
@@ -1711,6 +1727,12 @@
       "integrity": "sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=",
       "dev": true
     },
+    "colorette": {
+      "version": "1.2.2",
+      "resolved": "https://registry.npmjs.org/colorette/-/colorette-1.2.2.tgz",
+      "integrity": "sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==",
+      "dev": true
+    },
     "combined-stream": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/combined-stream/-/combined-stream-1.0.8.tgz",
@@ -2064,12 +2086,6 @@
         "semver": "^5.6.0"
       }
     },
-    "electron-to-chromium": {
-      "version": "1.3.136",
-      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.3.136.tgz",
-      "integrity": "sha512-xHkYkbEi4kI+2w5v6yBGCQTRXL7N0PWscygTFZu/1bArnPSo2WR9xjdw4m06RR4J5PncrWJcuOVv+MAG2mK5JQ==",
-      "dev": true
-    },
     "emoji-regex": {
       "version": "7.0.3",
       "resolved": "http://172.17.12.206:8081/repository/npm-group/emoji-regex/-/emoji-regex-7.0.3.tgz",
@@ -2158,6 +2174,12 @@
         "es6-promise": "^4.0.3"
       }
     },
+    "escalade": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/escalade/-/escalade-3.1.1.tgz",
+      "integrity": "sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==",
+      "dev": true
+    },
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
@@ -4175,15 +4197,6 @@
         }
       }
     },
-    "node-releases": {
-      "version": "1.1.21",
-      "resolved": "https://registry.npmjs.org/node-releases/-/node-releases-1.1.21.tgz",
-      "integrity": "sha512-TwnURTCjc8a+ElJUjmDqU6+12jhli1Q61xOQmdZ7ECZVBZuQpN/1UnembiIHDM1wCcfLvh5wrWXUF5H6ufX64Q==",
-      "dev": true,
-      "requires": {
-        "semver": "^5.3.0"
-      }
-    },
     "node-sass": {
       "version": "4.12.0",
       "resolved": "https://registry.npmjs.org/node-sass/-/node-sass-4.12.0.tgz",