lwIpWrapper: fix comment about IP4 address length

Co-authored-by: Daniele <34984733+maidnl@users.noreply.github.com>

Author: pennam

libraries/lwIpWrapper/src/CNetIf.h

@@ -47,7 +47,7 @@
 #define WL_WEP_KEY_MAX_LENGTH 13
 // Size of a MAC-address or BSSID
 #define WL_MAC_ADDR_LENGTH 6
-// Size of a MAC-address or BSSID
+// Size of a IP4 address
 #define WL_IPV4_LENGTH 4
 
 /* DEFAULT ADDRESS FOR ETHERNET CONFIGURATION */