fix: discord link (#10200)

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## Description

Updating the discord link :)

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---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

docs/.vuepress/config.js

@@ -113,7 +113,7 @@ module.exports = {
     },
     footer: {
       question: {
-        text: "Chat with Cosmos developers in <a href='https://discord.gg/W8trcGV' target='_blank'>Discord</a> or reach out on the <a href='https://forum.cosmos.network/c/tendermint' target='_blank'>SDK Developer Forum</a> to learn more."
+        text: "Chat with Cosmos developers in <a href='https://discord.gg/cosmosnetwork' target='_blank'>Discord</a> or reach out on the <a href='https://forum.cosmos.network/c/tendermint' target='_blank'>SDK Developer Forum</a> to learn more."
       },
       logo: "/logo-bw.svg",
       textLink: {
@@ -179,7 +179,7 @@ module.exports = {
             },
             {
               title: "Chat",
-              url: "https://discord.gg/W8trcGV"
+              url: "https://discord.gg/cosmosnetwork"
             }
           ]
         },