tools: themer: Fix the online help

Correct the indentation and the quoting of the theme strings.

Signed-off-by: Daniel Thompson <daniel@redfelineninja.org.uk>

tools/themer.py

@@ -43,30 +43,38 @@ class DefaultTheme():
 if __name__ == '__main__':
     parser = ArgumentParser(
         description='''Compiles themes into a format understood by wasp-os.
-                       The resulting string should be put in main.py like this:
+
+For the theme to take effect, the resulting string should be put in main.py
+like this:
 
    theme_string = THEME_STRING_GOES_HERE
-
-                       for the theme to take effect.
 ''',
-        epilog=''' To create a theme,
+        epilog=''' To create a theme, import this file and extend the
-               import this file and extend the DefaultTheme class, only changing the variables.
+DefaultTheme class, only changing the variables.
+
 Export the resulting class as 'Theme'.
+
 Example:
 --------
+
 theme.py:
+
     from themer import DefaultTheme
 
     class Theme(DefaultTheme):
         BLE_ICON_COLOR = 0x041F
 
 shell:
-                   $ ./themer.py theme # NOTE: do not include .py at end of file!
+
-                   > b'\xef{\xef{\xef{<\xe7\xef{\xb6\xb5\xb6\xbd\xff\xff\xff9'
+    # NOTE: do not include .py at end of file!
+    $ ./themer.py theme
+    > b'\\xef{\\xef{\\xef{<\\xe7\\xef{\\xb6\\xb5\\xb6\\xbd\\xff\\xff\\xff9'
 
 main.py:
+
     ...
-                   wasp.system.set_theme(b'\xef{\xef{\xef{<\xe7\xef{\xb6\xb5\xb6\xbd\xff\xff\xff9')
+    wasp.system.set_theme(
+        b'\\xef{\\xef{\\xef{<\\xe7\\xef{\\xb6\\xb5\\xb6\\xbd\\xff\\xff\\xff9')
     ...
 ''',
         formatter_class=RawTextHelpFormatter