Use username instead of id for Strava

Author: timangus

_config.yml

@@ -58,7 +58,7 @@ social-network-links:
   bluesky: timang.us
   facebook: tim.angus
   instagram: timang.us
-  strava: 1055459
+  strava: timangus
   github: timangus
   linkedin: timangus
   reddit: timangus