Updated Environment Variables (markdown)

Environment-Variables.md

@@ -9,7 +9,7 @@ This page will list all environment variables that could be passed into Statping
 - `GO_ENV`                    - Run Statping in testmode, will bypass HTTP authentication (if set as 'test')
 - `REMOVE_AFTER`              - Automatically delete records after time (default 3 months, '12h = 12 hours')
 - `CLEANUP_INTERVAL`          - Interval to check for old records (default 1 hour, '1h = 1 hour')
-- `ALLOW_REPORTS`             - Send Statping anonymous error reports so we can see issues (default is false)
+- `ALLOW_REPORTS`             - Send Statping anonymous [error reports](https://sentry.io/) so we can see issues (default is false)
 
 ### Database
 - `DB_CONN`                   - Database connection (sqlite, postgres, mysql) **Will automatically start if set to 'sqlite'**
@@ -25,13 +25,13 @@ This page will list all environment variables that could be passed into Statping
 
 ### Connection
 - `BASE_PATH`                 - Set the base URL prefix (set to 'monitor' if URL is domain.com/monitor)
-- `PREFIX`                    - A Prefix for each value in Prometheus /metric exporter
-- `HTTP_PROXY`                - Use a HTTP Proxy for HTTP Requests
+- `PREFIX`                    - A Prefix for each value in [Prometheus /metric exporter](https://github.com/statping/statping/wiki/Prometheus-Exporter)
+- `HTTP_PROXY`                - Use a [HTTP Proxy](https://golang.org/pkg/net/http/#ProxyFromEnvironment) for HTTP Requests
 - `AUTH_USERNAME`             - HTTP Basic Authentication username
 - `AUTH_PASSWORD`             - HTTP Basic Authentication password
 
 ### Assets
-- `SASS`                      - Set the absolute path to the sass binary location (find with `which sass`)
+- `SASS`                      - Set the absolute path to the [sass](](https://sass-lang.com/) binary location (find with `which sass`)
 - `USE_ASSETS`                - Automatically use assets from 'assets folder' (true/false)
 
 ### Automatic Fills