docs: use scripts to bypass bugs in the readthedocs build system

Signed-off-by: Xuehai Pan <XuehaiPan@pku.edu.cn>

.readthedocs.yaml

@@ -12,7 +12,7 @@ build:
     python: "3.8"
   jobs:
     post_install:
-      - sed -i -E 's/^     process identity for every yielded instance$/  \0/' "$(python3 -c "print(__import__('psutil').__file__)")"
+      - bash docs/source/fix-psutil-docstring.sh
 
 # Build documentation in the docs/ directory with Sphinx
 sphinx:

docs/source/fix-psutil-docstring.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+# shellcheck disable=SC2312
+exec sed -i -E 's/^     process identity for every yielded instance$/  \0/' "$(python3 -c "print(__import__('psutil').__file__)")"