fix(#652): rewrap the Working With Files upload paragraph

The reflow around the new UTF-8 sentence left one 120-character line; the
paragraph is wrapped at about 90 columns like the rest of the page.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

docs/wiki/Working-With-Files.md

@@ -189,10 +189,10 @@ it is UTF-16, which Excel's "Unicode Text" and Notepad's "Unicode" produce); sav
 (in Excel, "CSV UTF-8") and attach it again. Files with script or page extensions (sh, py,
 js, html) are not accepted, since a prompt upload is something for the agent to read, not
 something for Codeman to store and serve. A document keeps a trimmed copy of its original
-name, letters, digits, dot, dash and underscore with anything else turned into a dash, so `Q3 report.pdf` is findable as
-`paste-<time>-<id>-Q3-report.pdf`; a name made entirely of other characters saves without
-one. Uploads are refused for remote (SSH) sessions, whose working directory is on the other
-host.
+name, letters, digits, dot, dash and underscore with anything else turned into a dash, so
+`Q3 report.pdf` is findable as `paste-<time>-<id>-Q3-report.pdf`; a name made entirely of
+other characters saves without one. Uploads are refused for remote (SSH) sessions, whose
+working directory is on the other host.
 
 Uploads land in `.codeman-uploads/` inside the case, next to the code the agent is working
 on, because that is the one path a local agent and a Docker case (whose workspace is mounted