Correct link to RLB's API docs in README.

[doc only]

glean-core/rlb/README.md

@@ -1,4 +1,4 @@
-# glean
+# Glean
 
 The `Glean SDK` is a modern approach for a Telemetry library and is part of the [Glean project](https://docs.telemetry.mozilla.org/concepts/glean/glean.html).
 
@@ -6,8 +6,6 @@ The `Glean SDK` is a modern approach for a Telemetry library and is part of the
 
 This library provides a Rust language bindings on top of `glean-core`, targeted to Rust consumers.
 
-**Note: `glean` is currently under development and not yet ready for use.**
-
 ## Documentation
 
 All documentation is available online:
@@ -16,7 +14,7 @@ All documentation is available online:
 * [API documentation][apidocs]
 
 [book]: https://mozilla.github.io/glean/
-[apidocs]: https://mozilla.github.io/glean/docs/glean_preview/index.html
+[apidocs]: https://mozilla.github.io/glean/docs/glean/index.html
 
 ## Example