Merge pull request #6118 from segmentio/DOC-834

fixed broken npm link

Author: stayseesong

src/connections/sources/catalog/libraries/website/javascript/custom-proxy.md

@@ -179,7 +179,7 @@ To reduce fetching assets from Segment's CDN, you can bundle Analytics.js with y
 To bundle Analytics.js with your own code, you can: 
 * [Use Analytics.js as an npm package](/docs/connections/sources/catalog/libraries/website/javascript/quickstart/#step-2b-install-segment-as-a-npm-package).
 
-* [Use npm to install your destinations](/docs/connections/sources/catalog/libraries/website/javascript/#add-destinations-from-npm).
+* [Use npm to install your destinations](/docs/connections/sources/catalog/libraries/website/javascript#add-destinations-from-npm).
 
 * Hardcode your settings instead of fetching from the CDN (Segment doesn't recommend this as it completely bypasses the Segment source GUI).
 ```ts