[Bug #1123268] Fix typo

Doc/lib/libcurses.tex

@@ -161,7 +161,7 @@ The \function{filter()} routine, if used, must be called before
 calls, LINES is set to 1; the capabilities clear, cup, cud, cud1,
 cuu1, cuu, vpa are disabled; and the home string is set to the value of cr.
 The effect is that the cursor is confined to the current line, and so
-are screen updates.  This may be used for enabling cgaracter-at-a-time 
+are screen updates.  This may be used for enabling character-at-a-time 
 line editing without touching the rest of the screen.
 \end{funcdesc}