Update ma1sd to mxids

docs/build.md

@@ -1,10 +1,12 @@
 # From source
-- [Binaries](#binaries)
-  - [Requirements](#requirements)
-  - [Build](#build)
-- [Debian package](#debian-package)
-- [Docker image](#docker-image)
-- [Next steps](#next-steps)
+- [From source](#from-source)
+  - [Binaries](#binaries)
+    - [Requirements](#requirements)
+    - [Build](#build)
+  - [Debian package](#debian-package)
+  - [Docker image](#docker-image)
+    - [Multi-platform builds](#multi-platform-builds)
+  - [Next steps](#next-steps)
 
 ## Binaries
 ### Requirements
@@ -19,7 +21,7 @@ cd ma1sd
 ./gradlew build
 ```
 
-Create a new configuration file by coping `ma1sd.example.yaml` to `ma1sd.yaml` and edit to your needs.  
+Create a new configuration file by coping `mxids.example.yaml` to `mxids.yaml` and edit to your needs.  
 For advanced configuration, see the [Configure section](configure.md).
 
 Start the server in foreground to validate the build and configuration: