Merge pull request nightscout#7312 from jakobsandberg/readme-swagger-…

…link

Point readme to correct location of swagger.yaml

README.md

@@ -229,7 +229,7 @@ Once you've installed Nightscout, you can access API documentation by loading `/
  * Boluses over 2U: `http://localhost:1337/api/v1/treatments.json?find[insulin][$gte]=2`
 
 The API is Swagger enabled, so you can generate client code to make working with the API easy.
-To learn more about the Nightscout API, visit https://YOUR-SITE.com/api-docs/ or review [swagger.yaml](swagger.yaml).
+To learn more about the Nightscout API, visit https://YOUR-SITE.com/api-docs/ or review [swagger.yaml](lib/server/swagger.yaml).
 
 ## Environment