Update CONTRIBUTING.md (viash-hub#27)

CONTRIBUTING.md

@@ -27,32 +27,32 @@ Change all occurrences of `xxx` to the name of the component.
 Create a file at `src/xxx/config.vsh.yaml` with contents:
 
 ```yaml
-functionality:
-  name: xxx
-  description: xxx
-  keywords: [tag1, tag2]
-  links:
-    homepage: yyy
-    documentation: yyy
-    repository: yyy
-  references: 
-    doi: 12345/12345678.yz
-  license: MIT/Apache-2.0/GPL-3.0/...
-  argument_groups:
-    - name: Inputs
-      arguments: <...>
-    - name: Outputs
-      arguments: <...>
-    - name: Arguments
-      arguments: <...>
-  resources:
-    - type: bash_script
-      path: script.sh
-  test_resources:
-    - type: bash_script
-      path: test.sh
-    - type: file
-      path: test_data
+name: xxx
+description: xxx
+keywords: [tag1, tag2]
+links:
+  homepage: yyy
+  documentation: yyy
+  issue_tracker: yyy
+  repository: yyy
+references: 
+  doi: 12345/12345678.yz
+license: MIT/Apache-2.0/GPL-3.0/...
+argument_groups:
+  - name: Inputs
+    arguments: <...>
+  - name: Outputs
+    arguments: <...>
+  - name: Arguments
+    arguments: <...>
+resources:
+  - type: bash_script
+    path: script.sh
+test_resources:
+  - type: bash_script
+    path: test.sh
+  - type: file
+    path: test_data
 engines:
   - <...>
 runners:
@@ -73,6 +73,7 @@ functionality:
     homepage: https://arriba.readthedocs.io/en/latest/
     documentation: https://arriba.readthedocs.io/en/latest/
     repository: https://github.com/suhrig/arriba
+    issue_tracker: https://github.com/suhrig/arriba/issues
   references:
     doi: 10.1101/gr.257246.119
     bibtex: |