Fixed Runtime Errors of string formatting

On python v2 it throwing runtime errors of string formatting. The reason was closing of strings with " too early. This was fixed using only two " at the start and end. Tested 

Ref: https://www.codecademy.com/en/forum_questions/510696b83197d10da2006020

Author: neutrinoguy

Reconnoitre/lib/service_scan.py

@@ -36,18 +36,18 @@ def nmap_scan(
              ip_address,
              dns_server))
         print("[+] Using DNS server %s" % (dns_server))
-        TCPSCAN = "nmap -vv -Pn -sS -A -sC -p- -T 3 -script-args=unsafe=1 "
-        "--dns-servers %s -oN '%s/%s.nmap' -oX "
-        "'%s/%s_nmap_scan_import.xml' %s" % (
+        TCPSCAN = "nmap -vv -Pn -sS -A -sC -p- -T 3 -script-args=unsafe=1 \
+        --dns-servers %s -oN '%s/%s.nmap' -oX \
+        '%s/%s_nmap_scan_import.xml' %s" % (
             dns_server,
             output_directory,
             ip_address,
             output_directory,
             ip_address,
             ip_address)
-        UDPSCAN = "nmap -vv -Pn -A -sC -sU -T 4 --top-ports 200 "
-        "--max-retries 0 --dns-servers %s -oN '%s/%sU.nmap' "
-        "-oX '%s/%sU_nmap_scan_import.xml' %s" % (
+        UDPSCAN = "nmap -vv -Pn -A -sC -sU -T 4 --top-ports 200 \
+        --max-retries 0 --dns-servers %s -oN '%s/%sU.nmap' \
+        -oX '%s/%sU_nmap_scan_import.xml' %s" % (
             dns_server,
             output_directory,
             ip_address,
@@ -57,9 +57,9 @@ def nmap_scan(
     else:
         print("[+] Starting detailed TCP%s nmap scans for %s" % (
             ("" if no_udp_service_scan is True else "/UDP"), ip_address))
-        TCPSCAN = "nmap -vv -Pn -sS -A -sC -p- -T 3 "
-        "-script-args=unsafe=1 -n %s -oN '%s/%s.nmap' "
-        "-oX '%s/%s_nmap_scan_import.xml' %s" % (
+        TCPSCAN = "nmap -vv -Pn -sS -A -sC -p- -T 3 \
+        -script-args=unsafe=1 -n %s -oN '%s/%s.nmap' \
+        -oX '%s/%s_nmap_scan_import.xml' %s" % (
             dns_server,
             output_directory,
             ip_address,