Correct version number as indicated in silkscreen text.

hardware/dscomm.kicad_pcb

@@ -6698,7 +6698,7 @@
   (gr_text DNP (at 210.8 138.5 90) (layer F.SilkS)
     (effects (font (size 1 1) (thickness 0.15)))
   )
-  (gr_text "Hardware revision 0.9.0" (at 230 127.25) (layer B.SilkS) (tstamp 5F701572)
+  (gr_text "Hardware revision 0.9.1" (at 230 127.25) (layer B.SilkS) (tstamp 5F701572)
     (effects (font (size 2.2 2.2) (thickness 0.5)) (justify left mirror))
   )
   (gr_text Daughterboard (at 221 145) (layer B.SilkS)