Manual installation is inaccurate

[Gistbatch]

Describe the bug
A clear and concise description of what the bug is. Tell us what the code actually does.

The installation instructions for CMake contain a bug:
ln -s ${HOME}/bin/cmake/bin/cmake ${HOME}/bin cannot link

Expected behavior
A clear and concise description of what you expected to happen. Tell us what you want the code to do.
The link should be set to a unique location such as /usr/bin.

To Reproduce
Steps to reproduce the behavior:

1. Which version do you use? Provide branch and commit id. master, 972ab4c133e5684de8849ff1115f682385619764
2. Which build settings do you use? Which compiler version do you use? gcc 11.4.0 on WSL
3. On which machine does your problem occur? If on a cluster: Which modules are loaded? Windows 11, Ubuntu 22.04 WSL
4. Provide parameter/material files.

Screenshots/Console output
If you suspect a problem in the numerics/physics add a screenshot of your output.

If you encounter any errors/warnings/... during execution please provide the console output.
ln: failed to create symbolic link '/home/<myhome>/bin/cmake': File exists
Additional context
Add any other context about the problem here.

[sebwolf-de]

You can just ignore the ln command. The first command already moves the binary to $HOME/bin.
Feel free to open a PR with a fix, i.e. remove the link command.
Note: Usually you can not write to /usr/bin, so you have to install the files to your home directory.