tweak comment for clarity

Author: dicej

main.go

@@ -25,8 +25,8 @@ import (
 // make it available using e.g. `go install` and/or `go tool`.
 func main() {
 	// This is hard-coded to point to the latest canary release, which is
-	// appropriate for the `main` branch, but should be changed to the
-	// appropriate release URL for each tagged release.
+	// appropriate for the `main` branch, but should be changed to the tag
+	// name for each tagged release.
 	//
 	// TODO: Can we automate updating this for each release?
 	release := "canary"