Trying to fix PDF compilation error. See rest of message for details.

writing... WARNING: mm code '%%{init: { "theme" : "dark" }}%%\ngraph LR;\nA[Publisher #1] --> B[Topic]\nC[Publisher #2] --> B\nB --> D[Subscriber #1]': Mermaid exited with error:
76	[stderr]
77	b'\nError: Failed to launch the browser process!\n/home/docs/.cache/puppeteer/chrome-headless-shell/linux-131.0.6778.204/chrome-headless-shell-linux64/chrome-headless-shell: error while loading shared libraries: libasound.so.2: cannot open shared object file: No such file or directory\n\n\nTROUBLESHOOTING: https://pptr.dev/troubleshooting\n\n    at Interface.onClose (file:///home/docs/.asdf/installs/nodejs/19.9.0/lib/node_modules/@mermaid-js/mermaid-cli/node_modules/@puppeteer/browsers/lib/esm/launch.js:303:24)\n    at Interface.emit (node:events:525:35)\n    at Interface.close (node:internal/readline/interface:534:10)\n    at Socket.onend (node:internal/readline/interface:260:10)\n    at Socket.emit (node:events:525:35)\n    at endReadableNT (node:internal/streams/readable:1359:12)\n    at process.processTicksAndRejections (node:internal/process/task_queues:82:21)\n\n'
78	[stdout]
79	b'Generating single mermaid chart\n'

Author: Murilo Marinho

.readthedocs.yaml

@@ -16,6 +16,7 @@ build:
     # golang: "1.19"
   jobs:
     post_install:
+      - sudo apt-get install libasound2
       - npm install -g @mermaid-js/mermaid-cli
 
 # Build documentation in the docs/ directory with Sphinx