docs: fix rendering issues in mermaid JS diagrams (#18731)

Author: kitsune7

CONTRIBUTING.md

@@ -207,42 +207,80 @@ You can set the `--debug` option to turn on debugging logs (e.g. `vite --debug r
 
 ```mermaid
 flowchart TD
-    start{Followed issue\ntemplate?}
-    start --NO--> close1[Close and ask to\nfollow template]
+    start{Followed issue
+        template?}
+    start --NO--> close1["Close and ask to
+        follow template"]
     start --YES--> dupe{Is duplicate?}
-    dupe --YES--> close2[Close and point\nto duplicate]
-    dupe --NO--> repro{Has proper\nreproduction?}
-    repro --NO--> close3[Label: 'needs reproduction'\nbot will auto close if no update\nhas been made in 3 days]
+    dupe --YES--> close2[Close and point
+        to duplicate]
+    dupe --NO--> repro{Has proper
+      reproduction?}
+    repro --NO--> close3[Label: 'needs reproduction'
+        bot will auto close if no update
+        has been made in 3 days]
     repro --YES--> real{Is actually a bug?}
-    real --NO--> intended{Is the intended\nbehaviour?}
-    intended --YES--> explain[Explain and close\npoint to docs if needed]
-    intended --NO--> open[Keep open for discussion\nRemove 'pending triage' label]
-    real --YES--> real2["1. Remove 'pending triage' label\n2. Add related feature label if\napplicable (e.g. 'feat: ssr')\n3. Add priority and meta labels (see below)"]
-    real2 --> unusable{Does the\nbug make Vite\nunusable?}
-    unusable --YES--> maj{Does the bug\naffect the majority\nof Vite users?}
+    real --NO--> intended{Is the intended
+        behaviour?}
+    intended --YES--> explain[Explain and close
+        point to docs if needed]
+    intended --NO--> open[Keep open for discussion
+        Remove 'pending triage' label]
+    real --YES--> real2["① Remove 'pending triage' label
+        ② Add related feature label if applicable
+        (e.g. 'feat: ssr')
+        ③ Add priority and meta labels (see below)"]
+    real2 --> unusable{Does the
+        bug make Vite
+        unusable?}
+    unusable --YES--> maj{Does the bug
+        affect the majority
+        of Vite users?}
     maj --YES--> p5[p5: urgent]
     maj --NO--> p4[p4: important]
-    unusable --NO--> workarounds{Are there\nworkarounds for\nthe bug?}
+    unusable --NO--> workarounds{Are there
+        workarounds for
+        the bug?}
     workarounds --NO--> p3[p3: minor bug]
-    workarounds --YES--> p2[p2: edge case\nhas workaround]
+    workarounds --YES--> p2[p2: edge case
+        has workaround]
 ```
 
 ### Pull Request Review Workflow
 
 ```mermaid
 flowchart TD
-    start{Bug fix\nor\nfeature}
-    start --BUG FIX--> strict_bug{"Is this a 'strict fix'?\ni.e. fixes an obvious\noversight with no\nside effects"}
-    start --FEATURE--> feature[- Discuss feature necessity\n- Is there a better way\nto address the need?\n- Review code quality\n- Add labels\n- Add to milestone\n- Add to Team Board]
-    feature -.-> approve_non_strict[- Run vite-ecosystem-ci if needed\n- Approve if you feel strongly\nthat the PR is needed\nand add to milestone]
-    strict_bug --YES--> strict[- Verify the fix locally\n- Review code quality\n- Require test case if applicable\n- Request changes if necessary\n- Add labels]
-    strict_bug --NO--> non_strict[Discuss the potential side\neffects of the fix, e.g.\n- Could it introduce implicit\nbehavior changes in other cases?\n- Does it introduce too much changes?\n- Add labels\n- Add to Team Board]
+    start{Bug fix
+        or
+        feature}
+    start --BUG FIX--> strict_bug{"Is this a 'strict fix'?
+        i.e. fixes an obvious oversight with no side effects"}
+    start --FEATURE--> feature[• Discuss feature necessity
+        • Is there a better way to address the need?
+        • Review code quality
+        • Add labels
+        • Add to milestone
+        • Add to Team Board]
+    feature -.-> approve_non_strict[• Run vite-ecosystem-ci if needed
+        • Approve if you feel strongly that the PR is needed and add to milestone]
+    strict_bug --YES--> strict[• Verify the fix locally
+        • Review code quality
+        • Require test case if applicable
+        • Request changes if necessary
+        • Add labels]
+    strict_bug --NO--> non_strict[Discuss the potential side effects of the fix, e.g.
+        • Could it introduce implicit behavior changes in other cases?
+        • Does it introduce too much changes?
+        • Add labels
+        • Add to Team Board]
     non_strict -.-> approve_non_strict
     strict --> approve_strict[Approve if ready to be merged]
-    approve_strict --> merge_strict[Merge if approved by 2 or\nmore team members]
-    approve_non_strict -.-> merge_non_strict[Merge if approved by 2 or\nmore team members\nand the PR has been discussed\n in a team meeting]
+    approve_strict --> merge_strict[Merge if approved by 2 or more team members]
+    approve_non_strict -.-> merge_non_strict[Merge if approved by 2 or more team members and the PR has been discussed in a team meeting]
     merge_non_strict -.-> merge_extra
-    merge_strict --> merge_extra["- Use 'Squash and Merge'\n- Edit commit message to follow convention\n- In commit message body, list\nrelevant issues being fixed\ne.g. 'fix #1234, fix #1235'"]
+    merge_strict --> merge_extra["• Use 'Squash and Merge'
+        • Edit commit message to follow convention
+        • In commit message body, list relevant issues being fixed e.g. 'fix #1234, fix #1235'"]
 ```
 
 ## Notes on Dependencies