The package description for python3-rst-linker is literally "%{description}":

| $ dnf info -q --enable-repo=rawhide python\*-rst-linker\*
| Available packages
| Name           : python3-rst-linker
| Epoch          : 0
| Version        : 2.4.0
| Release        : 9.fc42
| Architecture   : noarch
| Download size  : 19.4 KiB
| Installed size : 23.4 KiB
| Source         : python-rst-linker-2.4.0-9.fc42.src.rpm
| Repository     : rawhide
| Summary        : Can add links and perform other custom replacements to rst
| URL            : https://github.com/jaraco/rst.linker
| License        : MIT
| Description    : %{description}
                   ^^^^^^^^^^^^^^
| Vendor         : Fedora Project
| $

Additionally, the "main" description in the spec file appears to be garbled:

| %description
|  rst.linker provides a routine for adding links and performing other custom
| replacements to restructured text files as a Sphinx extension.License License
| is indicated in the project metadata (typically one or more of the Trove
| classifiers). For more details, see this explanation < In your sphinx
| configuration file, include rst.linker as an extension and then add a
| link_files configuration section...

Reproducible: Always