docs: fix instance of double space in docs

Evan Readrequested to merge
eread/fix-instance-of-double-space-in-docs into main

Description

For: gitlab-org/technical-writing/team-tasks#1598, and using the rumdl rules specified as in: https://gitlab.com/gitlab-org/technical-writing/docs-gitlab-com/-/blob/b0191ab915662aac463fe9696bbd7e57cd6c3cf4/.rumdl.toml, I've run rumdl fmt over docs directory and this MR contains the only required fix.

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