Fix docpack shortcut for sysfuncs in text editors

Docpack app has several help files included. Tinypad and CEdit run the
app to show one of sysfuncs.txt/sysfuncr.txt files. The text editors
pass a one-letter argument to specify the text file. It used to be 'f'
for sysfuncs, it has become 'e' recently. Update this one-letter
argument both in tinypad and cedit.

Resolve #216

programs/develop/cedit/SRC/CEdit.ob07

@@ -1320,7 +1320,7 @@ BEGIN
     |menuBoard:
         K.Run("/sys/develop/board", "")
     |menuSysFunc:
-        K.Run("/sys/docpack", "f")
+        K.Run("/sys/docpack", "e")
     |menuLineNumbers:
         T.toggleNumbers;
         Ini.setInt("settings", "line_numbers", ORD(T.lineNumbers))

programs/develop/tinypad/trunk/data/tp-idata.inc

@@ -13,7 +13,7 @@ sz app_board   ,'/sys/develop/board',0
 sz app_tinypad ,'/sys/tinypad',0
 sz app_docpak  ,'/sys/docpack',0
 
-sz sysfuncs_param,'f',0
+sz sysfuncs_param,'e',0
 
 include 'tp-tables.inc'
 include 'tp-locale.inc'