Replace assignees with reviewers as asignees can't take a group

Author: Parker Johansen

.github/ISSUE_TEMPLATE/code-snippet-request.md

@@ -3,7 +3,7 @@ name: Code Snippet Request
 about: Request a code snippet (e.g. Hello World in Grain)
 title: Add {PROJECT} in {LANGUAGE}
 labels: enhancement
-assignees: '@TheRenegadeCoder/core'
+assignees: ''
 ---
 
 To request a new code snippet, please fill out the following:

.github/ISSUE_TEMPLATE/language-test-request.md

@@ -3,7 +3,7 @@ name: Language Test Request
 about: Request tests for an existing language that is missing a testinfo.yml (e.g. Perl)
 title: Add {LANGUAGE} Testing
 labels: enhancement, tests
-assignees: '@TheRenegadeCoder/core'
+assignees: ''
 ---
 
 To request a new language, please fill out the following:

.github/ISSUE_TEMPLATE/project-test-request.md

@@ -3,7 +3,7 @@ name: Project Test Request
 about: Request tests for a project that is missing tests (e.g. Linear Search)
 title: Add {PROJECT} Testing
 labels: enhancement, tests
-assignees: '@TheRenegadeCoder/core'
+assignees: ''
 ---
 
 To request tests for a new project, please fill out the following:

.github/PULL_REQUEST_TEMPLATE/code-snippet.md

@@ -3,7 +3,8 @@ name: New Code Snippet
 about: Add a code snippet in an existing language
 title: Add {PROJECT} in {LANGUAGE}
 labels: enhancement
-assignees: '@TheRenegadeCoder/core'
+reviewers: '@TheRenegadeCoder/core'
+assignees: ''
 ---
 
 Congrats on taking the first step to contributing to the Sample Programs repository maintained by [The Renegade Coder][renegade-coder]! 

.github/PULL_REQUEST_TEMPLATE/new-language-code-snippet.md

@@ -3,7 +3,8 @@ name: New Language Code Snippet
 about: Add a code snippet in a new language
 title: Add {PROJECT} in {LANGUAGE}
 labels: enhancement, tests
-assignees: '@TheRenegadeCoder/core'
+reviewers: '@TheRenegadeCoder/core'
+assignees: ''
 ---
 
 Congrats on taking the first step to contributing to the Sample Programs repository maintained by [The Renegade Coder][renegade-coder]! 

.github/PULL_REQUEST_TEMPLATE/new-project-tests.md

@@ -3,7 +3,8 @@ name: New Project Tests
 about: Add tests for a new project
 title: Add {PROJECT} tests
 labels: enhancement, tests
-assignees: '@TheRenegadeCoder/core'
+reviewers: '@TheRenegadeCoder/core'
+assignees: ''
 ---
 
 Congrats on taking the first step to contributing to the Sample Programs repository maintained by [The Renegade Coder][renegade-coder]! 

.github/PULL_REQUEST_TEMPLATE/refactor.md

@@ -3,7 +3,8 @@ name: Refactor
 about: Modify an existing code snippet or tests
 title: Modify {PROJECT} {TESTS} in {LANGUAGE}
 labels: refactor
-assignees: '@TheRenegadeCoder/core'
+reviewers: '@TheRenegadeCoder/core'
+assignees: ''
 ---
 
 Congrats on taking the first step to contributing to the Sample Programs repository maintained by [The Renegade Coder][renegade-coder]!