fix misc. character, remove invalid fields

.github/DISCUSSION_TEMPLATE/trouble_with_installation.yml

@@ -48,8 +48,6 @@ body:
       label: "Output of running `slither-doctor .`:"
     id: logs
     type: textarea
-description: "Get help troubleshooting slither installation"
 labels: 
   - installation-help
-name: "Trouble with Installing Slither"
 title: "[Installation-Help]: "

.github/ISSUE_TEMPLATE/false_negative.yml

@@ -57,5 +57,5 @@ body:
 description: "Slither missed a bug it should find."
 labels: 
   - false-negative
-name: False Negative"
+name: False Negative
 title: "[False Negative]: "