Update from https://github.com/opengisch/teaching-and-talks/commit/d18f2c3e70404528c9356e5c4d50d5c8c07d2e00

Author: opengisch

.github/workflows/ci.yaml

@@ -1,22 +1,4 @@
-# Documentation
-See https://github.com/opengisch/teaching-and-talks#readme.
-
-# Workflow
+Autogenerated content: Edit the sourcefiles in https://github.com/opengisch/teaching-and-talks
 
-```mermaid
-graph TD
-    subgraph Alpha[opengisch/teaching-and-talks]
-        A[User commits to this repository] --> B(CI inspects changes to user directories)
-        B --> |User made changes to their local stylesheet?| C(Overwrite local with global stylesheets)
-        B --> |User is a maintainer who made changes to a global stylesheet?| C
-        C --> D(Build all directories using revealmd-js and copy the build under a 'build' subdirectory)
-        D --> |Does any of the modified directory contain a 'DEPLOY' file?| E(Push them to opengisch/slides-deployed:staging)
-    end
-    subgraph Beta [opengisch/slides-deployed:staging]
-        E --> |on push| F(update root 'index.html' so that all and only the subdirs with a 'DEPLOY' file are listed)
-        F --> G(push 'build' + 'index.html' to opengisch/slides-deployed:production)
-    end
-    classDef r margin-right: 450px
-    class Alpha r
-    class Beta r
-```
+# Documentation
+See https://github.com/opengisch/teaching-and-talks#readme.