bpo-31569: correct PCBuild/ case to PCbuild/ in build scripts and docs (GH-3711)
diff --git a/Doc/library/test.rst b/Doc/library/test.rst
index 9d4ff7a..33978e3 100644
--- a/Doc/library/test.rst
+++ b/Doc/library/test.rst
@@ -186,7 +186,7 @@
Some other ways to execute the regression tests depend on what platform the
tests are being executed on. On Unix, you can run :program:`make test` at the
top-level directory where Python was built. On Windows,
-executing :program:`rt.bat` from your :file:`PCBuild` directory will run all
+executing :program:`rt.bat` from your :file:`PCbuild` directory will run all
regression tests.