docs: the 'noconvert' bindable function was renamed to 'flipconvert'

Also, move it to sit with the other toggles of the Insert menu, and
remove its mention from among the main-menu toggles.

doc/nano.texi

@@ -620,9 +620,6 @@ The following global toggles are available:
 @item Mouse Support
 @kbd{Meta-M} toggles the @option{-m} (@option{--mouse}) command-line option.
 
-@item No Conversion From DOS/Mac Format
-@kbd{Meta-N} toggles the @option{-N} (@option{--noconvert}) command-line option.
-
 @item Tabs To Spaces
 @kbd{Meta-O} toggles the @option{-E} (@option{--tabstospaces}) command-line option.
 
@@ -1342,6 +1339,10 @@ region) is piped to the command.
 Toggles between inserting into the current buffer and into a new
 empty buffer.
 
+@item flipconvert
+When reading in a file, toggles between converting and not converting
+it from DOS/Mac format.  Converting is the default.
+
 @item dosformat
 When writing a file, switches to writing a DOS format (CR/LF).
 
@@ -1429,9 +1430,6 @@ or read into a new buffer.
 @item mouse
 Toggles mouse support.
 
-@item noconvert
-Toggles automatic conversion of files from DOS/Mac format.
-
 @item suspendenable
 Toggles whether the suspend shortcut (normally @kbd{^Z}) will suspend the editor.
 

doc/nanorc.5

@@ -696,6 +696,10 @@ region) is piped to the command.
 Toggles between inserting into the current buffer and into a new
 empty buffer.
 .TP
+.B flipconvert
+When reading in a file, toggles between converting and not converting
+it from DOS/Mac format.  Converting is the default.
+.TP
 .B dosformat
 When writing a file, switches to writing a DOS format (CR/LF).
 .TP
@@ -783,9 +787,6 @@ or read into a new buffer.
 .B mouse
 Toggles mouse support.
 .TP
-.B noconvert
-Toggles automatic conversion of files from DOS/Mac format.
-.TP
 .B suspendenable
 Toggles whether the suspend sequence (normally ^Z) will suspend the editor window.
 .RE