fix : `textarea` placeholder fixed in `bug_report.yml`

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -19,14 +19,16 @@ body:
     attributes:
       label: What happened?
       description: Provide a clear and concise description of what the bug is.
-      placeholder: Tell us a description of the bug.
+      placeholder: >
+        Tell us a description of the bug.
     validations:
       required: true
   - type: textarea
     id: step-to-reproduce
     attributes:
       label: Steps to reproduce
-      description: Provide details of how to reproduce the bug.
+      description: >
+        Provide details of how to reproduce the bug.
       placeholder: ex. 1. Go to '...'
     validations:
       required: true
@@ -35,7 +37,8 @@ body:
     attributes:
       label: Expected behavior
       description: What did you expect to happen?
-      placeholder: ex. I expected '...' to happen
+      placeholder: >
+        ex. I expected '...' to happen
     validations:
       required: true
   - type: textarea
@@ -43,7 +46,8 @@ body:
     attributes:
       label: Actual behavior
       description: What did actually happen?
-      placeholder: ex. Instead '...' happened
+      placeholder: >
+        ex. Instead '...' happened
     validations:
       required: true
   - type: dropdown