Replace concurrency workflow diagram

Updated the diagram for concurrency workflow to reflect changes.

Author: rmcdaniel

docs/features/concurrency.md

@@ -78,7 +78,7 @@ class MyWorkflow extends Workflow
 }
 ```
 
-![workflow](https://mermaid.ink/img/pako:eNp9kctugzAQRX8lmjUBbPOyK1WqlC6zalcVGwcbsAQYwRCVRvx7DZUS0UW88txzNc8bFFZpEFANsq8Pn6eXvDsczvNbgeZqcCbH4-sjos9g9AzGe0h3kO0h28FkD6NnMP4PwYNWD600yo14W805YK1bnYNwX6VLOTWYQ94tziontB9zV4DAYdIeTL2SqE9GuuW0IErZjHf1XRm0w11srFTahTfAud_2aUZ0KQvblaZa9WlonFwj9qMIghX7lcF6uviFbYPRqFoOWF95EiQ0ySRlOkmZjBlTxYXwrKQRKVUaEiphWTzoZfdl7aMrvfVz_jvmdtPNs1b-BhH7PORxxBNGGM1SHnkwg0iZHxFOU-YKxoxy6vL-bEmJH26POBxymvFk-QWh37PQ?type=png)
+[![](https://mermaid.ink/img/pako:eNpVUstuwjAQ_JVozwElthMFHyrR0h6qREKUUxsOLjHEamIjx2lLEf9e54XMnjyzM7NeyxfYq4IDhUOlfvYl08bbrnKZS8_W8iM7L_dGfAtzDncT27SfR81Opbd-_Ni0svGE9NZMs6ri1W6QdFUIza1XSS_dTNY7e_r8sr0FvHEteOPYu0pD5wJo581mD16KHA47Bi4Ld0xGHB1xdFnkNKKxMZrHtYdBoYsycoeiSZuinnh1MuMxMyNDa0TRhMCHoxYFUKNb7kPNdc06CJdOmYMpec1zoPZYMP2VQy6v1nNi8l2perJp1R5LoAdWNRa1p4IZvhLMPm19Y7Vdi-sn1UoDNFqQPgToBX6B4jCZLyJbQYiCJMbYhzPQEAfzmJAFIihGBCdXH_76oZZGuKcICTBCSeIDL4RROhv-T_-Nrv-BIKzD?type=png)](https://mermaid.live/edit#pako:eNpVUstuwjAQ_JVozwElthMFHyrR0h6qREKUUxsOLjHEamIjx2lLEf9e54XMnjyzM7NeyxfYq4IDhUOlfvYl08bbrnKZS8_W8iM7L_dGfAtzDncT27SfR81Opbd-_Ni0svGE9NZMs6ri1W6QdFUIza1XSS_dTNY7e_r8sr0FvHEteOPYu0pD5wJo581mD16KHA47Bi4Ld0xGHB1xdFnkNKKxMZrHtYdBoYsycoeiSZuinnh1MuMxMyNDa0TRhMCHoxYFUKNb7kPNdc06CJdOmYMpec1zoPZYMP2VQy6v1nNi8l2perJp1R5LoAdWNRa1p4IZvhLMPm19Y7Vdi-sn1UoDNFqQPgToBX6B4jCZLyJbQYiCJMbYhzPQEAfzmJAFIihGBCdXH_76oZZGuKcICTBCSeIDL4RROhv-T_-Nrv-BIKzD)
 
 Activity 1 will execute and complete before any other activities start. Activities 2 and 3 will execute in series, waiting for each to complete one after another before continuing. At the same time, activities 4 and 5 will execute together in parallel and only when they all complete will execution continue. Finally, activity 6 executes last after all others have completed.