Fix links in READMEs.

README.md

@@ -1,5 +1,5 @@
 <p align="center">
-  <a href="https://lotu.sh/" title="Lotus Docs">
+  <a href="https://docs.filecoin.io/" title="Filecoin Docs">
     <img src="documentation/images/lotus_logo_h.png" alt="Project Lotus Logo" width="244" />
   </a>
 </p>
@@ -18,7 +18,7 @@ Lotus is an implementation of the Filecoin Distributed Storage Network. For more
 
 ## Building & Documentation
 
-For instructions on how to build lotus from source, please visit [https://lotu.sh](https://lotu.sh) or read the source [here](https://github.com/filecoin-project/lotus/tree/master/documentation).
+For instructions on how to build, install and setup lotus, please visit [https://docs.filecoin.io/get-started/lotus](https://docs.filecoin.io/get-started/lotus/).
 
 ## Reporting a Vulnerability
 

tools/dockers/docker-examples/README.md

@@ -11,7 +11,7 @@ In this `docker-examples/` directory are community-contributed Docker and Docker
    - local node for a developer (`api-local-`)
    - hosted endpoint for apps / multiple developers (`api-hosted-`)
 - **For a local devnet or shared devnet**
-   - basic local devnet (also see [lotus docs on setting up a local devnet](https://lotu.sh/en+setup-local-dev-net))
+   - basic local devnet (also see [lotus docs on setting up a local devnet](https://docs.filecoin.io/build/local-devnet/))
    - shared devnet