chore: remove trailing whitespace (#2985)

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Author: popsu

crates/atuin-client/config.toml

@@ -49,7 +49,7 @@
 ## in any directory within a git repository tree (default: false).
 ##
 ## To use workspace mode by default when available, set this to true and
-## set filter_mode to "workspace" or leave it unspecified and 
+## set filter_mode to "workspace" or leave it unspecified and
 ## set search.filters to include "workspace" before other filter modes.
 # workspaces = false