Not complete installation guide for Fedora

[CrazyRoka]

I had an issue when installing on Fedora:

psutil/_psutil_common.c:9:10: fatal error: Python.h: No such file or directory
        9 | #include <Python.h>
          |          ^~~~~~~~~~
    compilation terminated.
    error: command 'gcc' failed with exit status 1

Fixed with sudo dnf install python3-devel which was not mentioned in Readme

[jdm]

Could you make a pull request to fix that, please? It appears we already include it in our bootstrap code:

servo/python/servo/bootstrap.py

Line 103 in 271ff16

'clang', 'clang-libs', 'autoconf213', 'python3-devel',

.

[CrazyRoka]

I was following the tutorial and these commands doesn't work for fresh Fedora installation.

sudo dnf install python3 python3-virtualenv python3-pip
python3 ./mach bootstrap