[Docs] fix slack join link (#1205)

docs/_snippets/get-help.mdx

@@ -2,7 +2,7 @@
   <Card title="Talk to founders" icon="calendar" href="https://cal.com/taranjeetio/ec">
   Schedule a call
   </Card>
-  <Card title="Slack" icon="slack" href="https://join.slack.com/t/embedchain/shared_invite/zt-22uwz3c46-Zg7cIh5rOBteT_xe1jwLDw" color="#4A154B">
+  <Card title="Slack" icon="slack" href="https://embedchain.ai/slack" color="#4A154B">
     Join our slack community
   </Card>
   <Card title="Discord" icon="discord" href="https://discord.gg/6PzXDgEjG5" color="#7289DA">

docs/_snippets/missing-data-source-tip.mdx

@@ -4,7 +4,7 @@
   <Card title="Google Form" icon="file" href="https://forms.gle/NDRCKsRpUHsz2Wcm8" color="#7387d0">
     Fill out this form
   </Card>
-  <Card title="Slack" icon="slack" href="https://join.slack.com/t/embedchain/shared_invite/zt-22uwz3c46-Zg7cIh5rOBteT_xe1jwLDw" color="#4A154B">
+  <Card title="Slack" icon="slack" href="https://embedchain.ai/slack" color="#4A154B">
     Let us know on our slack community
   </Card>
   <Card title="Discord" icon="discord" href="https://discord.gg/6PzXDgEjG5" color="#7289DA">

docs/_snippets/missing-llm-tip.mdx

@@ -1,7 +1,7 @@
 <p>If you can't find the specific LLM you need, no need to fret. We're continuously expanding our support for additional LLMs, and you can help us prioritize by opening an issue on our GitHub or simply reaching out to us on our Slack or Discord community.</p>
 
 <CardGroup cols={2}>
-  <Card title="Slack" icon="slack" href="https://join.slack.com/t/embedchain/shared_invite/zt-22uwz3c46-Zg7cIh5rOBteT_xe1jwLDw" color="#4A154B">
+  <Card title="Slack" icon="slack" href="https://embedchain.ai/slack" color="#4A154B">
     Let us know on our slack community
   </Card>
   <Card title="Discord" icon="discord" href="https://discord.gg/6PzXDgEjG5" color="#7289DA">

docs/_snippets/missing-vector-db-tip.mdx

@@ -3,7 +3,7 @@
 <p>If you can't find the specific vector database, please feel free to request through one of the following channels and help us prioritize.</p>
 
 <CardGroup cols={2}>
-  <Card title="Slack" icon="slack" href="https://join.slack.com/t/embedchain/shared_invite/zt-22uwz3c46-Zg7cIh5rOBteT_xe1jwLDw" color="#4A154B">
+  <Card title="Slack" icon="slack" href="https://embedchain.ai/slack" color="#4A154B">
     Let us know on our slack community
   </Card>
   <Card title="Discord" icon="discord" href="https://discord.gg/6PzXDgEjG5" color="#7289DA">

docs/community/connect-with-us.mdx

@@ -8,7 +8,7 @@ We believe in building a vibrant and supportive community around embedchain. The
   <Card title="Twitter" icon="twitter" href="https://twitter.com/embedchain">
     Follow us on Twitter
   </Card>
-  <Card title="Slack" icon="slack" href="https://join.slack.com/t/embedchain/shared_invite/zt-22uwz3c46-Zg7cIh5rOBteT_xe1jwLDw" color="#4A154B">
+  <Card title="Slack" icon="slack" href="https://embedchain.ai/slack" color="#4A154B">
     Join our slack community
   </Card>
   <Card title="Discord" icon="discord" href="https://discord.gg/6PzXDgEjG5" color="#7289DA">

docs/mint.json

@@ -238,7 +238,7 @@
   "footerSocials": {
     "website": "https://embedchain.ai",
     "github": "https://github.com/embedchain/embedchain",
-    "slack": "https://join.slack.com/t/embedchain/shared_invite/zt-22uwz3c46-Zg7cIh5rOBteT_xe1jwLDw",
+    "slack": "https://embedchain.ai/slack",
     "discord": "https://discord.gg/6PzXDgEjG5",
     "twitter": "https://twitter.com/embedchain",
     "linkedin": "https://www.linkedin.com/company/embedchain"