update keybinding list (missing "s" - simulation) and some minor corrections in commands.html

doc/xschem_man/commands.html

@@ -189,6 +189,7 @@ ctrl        'q'         Exit XSCHEM
 alt         'r'         Rotate objects around their anchor points
 shift       'R'         Rotate
 -           'r'         Start rect
+            's'         run simulation (asks confirmation)
 shift       'S'         Change element order
 ctrl+shift  'S'         Save  as schematic
 ctrl        's'         Save schematic
@@ -230,7 +231,7 @@ ctrl        '$'         Toggle use XCopyArea vs drawing primitives for drawing t
 
  <h3>KEYBIND CUSTOMIZATION</h3>
  <p>
-  changes to default keybindings may be placed in the <kbd>~/.xschem</kbd> file as in the following examples:
+  changes to default keybindings may be placed in the <kbd>~/.xschem/xschemrc</kbd> file as in the following examples:
  </p>
  <pre class="code">
 ## replace Ctrl-d with Escape (so you won't kill the program :-))

src/keys.help

@@ -151,6 +151,7 @@ shift       'R'         Rotate
 -           'r'         Start rect
 shift       'S'         Change element order
 ctrl+shift  'S'         Save  as schematic
+            's'         run simulation (asks confirmation)
 ctrl        's'         Save schematic
 alt         's'         Reload current schematic from disk
 ctrl+alt    's'         Save-as symbol