Explicitly mark comment lines in builtin sheets.

cheatsheets/nmap

@@ -1,33 +1,33 @@
-Single target scan:
+# Single target scan:
 nmap [target]
 
-Scan from a list of targets:
+# Scan from a list of targets:
 nmap -iL [list.txt]
 
-iPv6:
+# iPv6:
 nmap -6 [target]
 
-OS detection:
+# OS detection:
 nmap -O [target]
 
-Save output to text file:
+# Save output to text file:
 nmap -oN [output.txt] [target]
 
-Save output to xml file:
+# Save output to xml file:
 nmap -oX [output.xml] [target]
 
-Scan a specific port:
+# Scan a specific port:
 nmap -source-port [port] [target]
 
-Do an aggressive scan:
+# Do an aggressive scan:
 nmap -A [target]
 
-Traceroute:
+# Traceroute:
 nmap -traceroute [target]
 
-Ping scan only: -sP
-Don't ping:     -PN
-TCP SYN ping:   -PS
-TCP ACK ping:   -PA
-UDP ping:       -PU
-ARP ping:       -PR
+# Ping scan only: -sP
+# Don't ping:     -PN
+# TCP SYN ping:   -PS
+# TCP ACK ping:   -PA
+# UDP ping:       -PU
+# ARP ping:       -PR