Update issue templates (#460)

Author: jbampton

.github/ISSUE_TEMPLATE/join_core_team.md

@@ -1,13 +1,13 @@
 ---
-name: Join Core Team (C programmer or Embedded programmer)
+name: Join the Core Team (C programmer or Embedded programmer)
 about: I want to join the Core Team.
 title: "[Join] Core team"
 labels: Join
 assignees: BaseMax
 ---
 
 Hi, One Language Team;
-I'm here to tell you I'm interested in the project and want to be a part of this compiler to help and participate in this open-source project.
+I'm here to tell you I'm interested in this compiler project and want to help and participate in this open-source project.
 
 ## Introduction
 <!-- Please introduce yourself and your professional experience in a maximum of 5 sentences. -->

.github/ISSUE_TEMPLATE/join_web_team.md

@@ -7,7 +7,7 @@ assignees: BaseMax
 ---
 
 Hi, One Language Team;
-I'm here to tell you I'm interested in the project and want to be a part of this compiler to help and participate in this open-source project.
+I'm here to tell you I'm interested in this compiler project and want to help and participate in this open-source project.
 
 ## Introduction
 <!-- Please introduce yourself and your professional experience in a maximum of 5 sentences. -->