fixed #19 messaging gateway render issue

Author: aheil

EIP_Elements.puml

@@ -301,8 +301,8 @@ _alias -- _datasource
 /'  EIP Pattern: Messaging Gateway 
     Link: https://www.enterpriseintegrationpatterns.com/patterns/messaging/MessagingGateway.html
 '/
-!define MessagingGateway(_alias) rectangle "<$massaging_gateway>" as _alias <<massaging gateway>> 
-!define MessagingGateway(_alias, _label) rectangle "<$massaging_gateway>\r _label" as _alias <<massaging gateway>> 
+!define MessagingGateway(_alias) rectangle "<$messaging_gateway>" as _alias <<massaging gateway>> 
+!define MessagingGateway(_alias, _label) rectangle "<$messaging_gateway>\r _label" as _alias <<massaging gateway>> 
 
 /'  EIP Pattern: Messaging Mapper
     Link: https://www.enterpriseintegrationpatterns.com/patterns/messaging/MessagingMapper.html

dist/EIP-PlantUML.puml

@@ -1,4 +1,4 @@
-' Autogenerated Tuesday, July 9, 2019 9:38:51 PM
+' Autogenerated Tuesday, July 9, 2019 10:08:37 PM
 
 sprite $aggregator [100x65/16z] {
 xTX50iCm34HHcTcw_sdBh4r9nVdxv8LZcrX6pqxkyKCC631Wm801GqO8VTfpnRAdlnzowriDnybe6ucPHpAgHkHD8nfLOrUFHia8l6l7w1exnZt5YBcKMblh
@@ -767,8 +767,8 @@ _alias -- _datasource
 /'  EIP Pattern: Messaging Gateway 
     Link: https://www.enterpriseintegrationpatterns.com/patterns/messaging/MessagingGateway.html
 '/
-!define MessagingGateway(_alias) rectangle "<$massaging_gateway>" as _alias <<massaging gateway>> 
-!define MessagingGateway(_alias, _label) rectangle "<$massaging_gateway>\r _label" as _alias <<massaging gateway>> 
+!define MessagingGateway(_alias) rectangle "<$messaging_gateway>" as _alias <<massaging gateway>> 
+!define MessagingGateway(_alias, _label) rectangle "<$messaging_gateway>\r _label" as _alias <<massaging gateway>> 
 
 /'  EIP Pattern: Messaging Mapper
     Link: https://www.enterpriseintegrationpatterns.com/patterns/messaging/MessagingMapper.html