doc: fix typos

boards/msba2-common/tools/armtools.txt

@@ -9,7 +9,7 @@ On reception of a SIGUSR1, it reopens the port and resets the ARM.
 
 "./lpc2k_pgm /dev/ttyUSB1 /path/to/firmware.ihex" will do what you
 expect, but it will additionally run "killall -SIGUSR2 pseudoterm" before
-anѕ "killall -SIGUSR1 pseudoterm" after flashing.
+and "killall -SIGUSR1 pseudoterm" after flashing.
 
 Together, the tools enable you to have a terminal connected to the board
 at all times, but let you flash whenever you feel like.

sys/net/gnrc/netapi/gnrc_netapi.c

@@ -45,7 +45,7 @@ static inline int _get_set(kernel_pid_t pid, uint16_t type,
     msg_t cmd;
     msg_t ack;
     gnrc_netapi_opt_t o;
-    /* set ńetapi's option struct */
+    /* set netapi's option struct */
     o.opt = opt;
     o.context = context;
     o.data = data;