fix java error

MatthewSZhang · MatthewSZhang · commit a4a0a227ceaf · 2025-07-14T15:57:08.000+08:00
diff --git a/.readthedocs.yml b/.readthedocs.yml
@@ -3,6 +3,7 @@ build:
   os: ubuntu-22.04
   tools:
     python: "3.13"
+    java: "openjdk-17"
   
   apt_packages:
     - plantuml
