Merge pull request #4570 from segmentio/add-functions-dependency

Add dependency to Functions docs

Author: rchinn1

src/_includes/content/functions/runtime.md

@@ -19,6 +19,7 @@ The following dependencies are installed in the function environment by default.
 - [`hubspot-api-nodejs`](https://www.npmjs.com/package/@hubspot/api-client){:target="_blank"} exposed as `hubspotlib.hubspot`
 - [`jsforce v1.11.0`](https://www.npmjs.com/package/jsforce){:target="_blank"} exposed as `jsforce`
 - [`jsonwebtoken v8.5.1`](https://www.npmjs.com/package/jsonwebtoken){:target="_blank"} exposed as `jsonwebtoken`
+- [`libphonenumber-js`](https://www.npmjs.com/package/libphonenumber-js){:target="_blank"} exposed as `libphonenumberjslib.libphonenumberjs`
 - [`lodash v4.17.19`](https://www.npmjs.com/package/lodash){:target="_blank"} exposed as `_`
 - [`mailjet`](https://www.npmjs.com/package/node-mailjet){:target="_blank"} exposed as `const mailJet = nodemailjet.nodemailjet;`
 - [`moment-timezone v0.5.31`](https://www.npmjs.com/package/moment-timezone/v/0.5.31){:target="_blank"} exposed as `moment`