docs: mention alternative bearer token header format (pomerium#2155)

docs/docs/topics/programmatic-access.md

@@ -48,6 +48,10 @@ The application interacting with Pomerium must manage the following workflow. Co
 1. The script or application is responsible for handling that http callback request, and securely handling the callback session (`pomerium_jwt`) queryparam.
 1. The script or application can now make any requests as normal to the upstream application by setting the `Authorization: Pomerium ${pomerium_jwt}` header.
 
+:::tip
+Pomerium supports `Authorization: Bearer Pomerium-${pomerium_jwt}` in addition to `Authorization: Pomerium ${pomerium_jwt}` format.
+:::
+
 ## Example Code
 
 Please consider see the following minimal but complete python example.