arp-scan: clarified page

pages/linux/arp-scan.md

@@ -1,12 +1,12 @@
 # arp-scan
 
-> Send ARP packets to hosts on the local network to scan which ones answer.
+> Send ARP packets to hosts (specified as IP addresses or hostnames) to scan the local network.
 
 - Scan the current local network:
 
 `arp-scan --localnet`
 
-- Scan an IP network with a custom bits mask:
+- Scan an IP network with a custom bitmask:
 
 `arp-scan {{192.168.1.1}}/{{24}}`
 
@@ -14,6 +14,6 @@
 
 `arp-scan {{127.0.0.0}}-{{127.0.0.31}}`
 
-- Scan an IN network with a custom net mask:
+- Scan an IP network with a custom net mask:
 
 `arp-scan {{10.0.0.0}}:{{255.255.255.0}}`