docs: change codesandbox to stackblitz

Author: dangreen

.github/ISSUE_TEMPLATE/bug-report.yml

@@ -30,7 +30,7 @@ body:
       label: Reproduction
       description: |
         Please provide issue reproduction.
-        You can give a link to a repository with the reproduction or make a fork of [this sandbox for Vue3](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/v4/sandboxes/bar) or [this sandbox for Vue2](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/v4/legacy/sandboxes/bar) and reproduce the issue there.
+        You can give a link to a repository with the reproduction or make a fork of [this sandbox](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/bar) and reproduce the issue there.
     validations:
       required: true
 

website/src/examples/index.md

@@ -2,17 +2,17 @@
 
 ## Vue 3 charts
 
-- [Bar](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/bar)
-- [Bubble](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/bubble)
-- [Doughnut](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/doughnut)
-- [Line](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/line)
-- [Pie](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/pie)
-- [PolarArea](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/polar-area)
-- [Radar](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/radar)
-- [Scatter](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/scatter)
-- [Bar with reactive data](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/reactive)
-- [Custom chart](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/custom)
-- [Events](https://codesandbox.io/s/github/apertureless/vue-chartjs/tree/main/sandboxes/events)
+- [Bar](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/bar)
+- [Bubble](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/bubble)
+- [Doughnut](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/doughnut)
+- [Line](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/line)
+- [Pie](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/pie)
+- [PolarArea](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/polar-area)
+- [Radar](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/radar)
+- [Scatter](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/scatter)
+- [Bar with reactive data](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/reactive)
+- [Custom chart](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/custom)
+- [Events](https://stackblitz.com/github/apertureless/vue-chartjs/tree/main/sandboxes/events)
 
 ## Vue 2 charts (vue-chartjs v4)