gprs/sgsn_vty: fix typo in comment

Change-Id: I63225b7ba6d666eddf00b1deb893e79dc9ec842b
diff --git a/openbsc/src/gprs/sgsn_vty.c b/openbsc/src/gprs/sgsn_vty.c
index 85e4e91..3ce054f 100644
--- a/openbsc/src/gprs/sgsn_vty.c
+++ b/openbsc/src/gprs/sgsn_vty.c
@@ -63,7 +63,7 @@
 #define GSM0408_T3360_SECS	6	/* waiting for AUTH/CIPH RESP */
 #define GSM0408_T3370_SECS	6	/* waiting for ID RESP */
 
-/* Section 11.2.2 / Table 11.4a MM timers netwokr side */
+/* Section 11.2.2 / Table 11.4a MM timers network side */
 #define GSM0408_T3313_SECS	30	/* waiting for paging response */
 #define GSM0408_T3314_SECS	44	/* force to STBY on expiry, Ready timer */
 #define GSM0408_T3316_SECS	44