Typo fix.

doc/latex/cgi-script.tex

@@ -13,7 +13,7 @@ writing CGI scripts in Scheme.
  (\ex{REQUEST\_METHOD}, \ex{QUERY\_STRING} (for a \ex{GET} request),
  \ex{CONTENT\_LENGTH} (for a \ex{POST} request)).  So a query string
  like \codex{button=on\&\ob{}reply=Oh,\ob{}\%20yes} becomes an alist
- \codex{(("button" . "on") ("reply" . "Oh, yes"))}.
+ \codex{(("button" . "on") ("reply" . "Oh, yes"))}
  
  \ex{Cgi-form-query} only works for \ex{GET} and \ex{POST} methods.
 \end{desc}