fix: version

Author: RobPasMue

README.rst

@@ -146,7 +146,7 @@ For example, on Linux with Python 3.9, unzip the wheelhouse archive and install
 
 .. code:: bash
 
-    unzip ansys-geometry-core-v0.4.dev0-wheelhouse-ubuntu-latest-3.9.zip wheelhouse
+    unzip ansys-geometry-core-v0.4rc1-wheelhouse-ubuntu-latest-3.9.zip wheelhouse
     pip install ansys-geometry-core -f wheelhouse --no-index --upgrade --ignore-installed
 
 If you're on Windows with Python 3.9, unzip to a wheelhouse directory and install using the preceding command.