[docs] Added missing words for roadmap

Author: nemesifier

spelling_wordlist.txt

@@ -129,6 +129,7 @@ ipdb
 iperf
 iproute2
 IPs
+IPsec
 iptables
 IPv
 IPython
@@ -165,6 +166,7 @@ methodologies
 metres
 MiB
 middleware
+Mikrotik
 misconfiguration
 mixin
 mixins
@@ -203,6 +205,7 @@ postfix
 postgresql
 pppd
 pptp
+pre
 precompiled
 preconfiguration
 preconfigured
@@ -235,6 +238,8 @@ repo
 repository
 respawn
 reusability
+rollout
+rollouts
 rtt
 runtime
 saml
@@ -305,6 +310,7 @@ VNI
 vpn
 vpns
 vxlan
+Vyatta
 webpack
 webservers
 Websocket