docs: i2c: fix typo

Fix "issus" -> "issues".

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Acked-by: Peter Rosin <peda@axentia.se>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Documentation/i2c/i2c-topology.rst

@@ -169,7 +169,7 @@ PL1. If you build a topology with a parent-locked mux being the child
      of another mux, this might break a possible assumption from the
      child mux that the root adapter is unused between its select op
      and the actual transfer (e.g. if the child mux is auto-closing
-     and the parent mux issus I2C-transfers as part of its select).
+     and the parent mux issues I2C-transfers as part of its select).
      This is especially the case if the parent mux is mux-locked, but
      it may also happen if the parent mux is parent-locked.