Move migration/_index.md inside the installation folder

Updated the weight to 10

The goal is to address this feedback: fluxcd#718

Signed-off-by: mehak151 <66996176+mehak151@users.noreply.github.com>

content/en/flux/installation/migration/_index.md

@@ -0,0 +1,40 @@
+---
+title: "Migrate from Flux v1"
+linkTitle: "Migrate from Flux v1"
+description: "Migration guides for Flux v1 and Helm Operator users."
+weight: 10
+---
+
+{{% alert color="danger" title="Flux Legacy has reached end of life." %}}
+Flux Legacy and Helm Operator have [been
+archived](/blog/2022/10/september-2022-update/#flux-legacy-v1-retirement-plan). This means that development and support by the Flux Community has been stopped indefinitely.
+
+We strongly recommend you familiarise yourself with the newest Flux and migrate as soon as possible.
+{{% /alert %}}
+
+If you still need migration help, there are still [free migration
+workshops](https://bit.ly/FluxMigrationSurvey), or reach out for paid
+support to one of the companies [listed here](/support/#commercial-support).
+
+## Resources
+
+Here are also some resources you might find helpful:
+
+{{% blocks/section color="white" %}}
+
+{{% blocks/resource
+youtube="UDNXuXNM3po"
+title="Key Learnings from Migrating from Flux1 to Flux2 by Josh Callis" %}}
+{{% /blocks/resource %}}
+
+{{% blocks/resource
+youtube="pYcUukYGyZE"
+title="CNCF Cloud Native Live: Migrating from Flux v1 to Flux with Leigh Capili" %}}
+{{% /blocks/resource %}}
+
+{{% blocks/resource
+youtube="vwvTwLQhXVI"
+title="Migrating from Flux v1 to Flux with Leigh Capili" %}}
+{{% /blocks/resource %}}
+
+{{% /blocks/section %}}