Add CRB repository enablement step for NVIDIA drivers (#3020)

* Add CRB repository enablement step for NVIDIA drivers

Added instructions to enable the CodeReady Builder (CRB) repository before installing NVIDIA GPU drivers. Without CRB enabled, the development tools groupinstall produces errors on a default Rocky Linux 9.6 Worskstation installation.

* Fix command to enable CRB repository

Updated command to enable the CodeReady Builder repository. Add correct command for enabling CRB.

---------

Co-authored-by: sspencerwire <sspencerwire@gmail.com>

Author: nodakbarnes

docs/desktop/display/installing_nvidia_gpu_drivers.md

@@ -31,6 +31,12 @@ Enable the Extra Packages for Enterprise Linux (EPEL) repository:
 sudo dnf install epel-release -y
 ```
 
+Enable the CodeReady Builder (CRB) repository:
+
+```bash
+sudo dnf config-manager --enable crb
+```
+
 Installing development tools ensures necessary build dependencies:
 
 ```bash