fix: Typo corrections

[cypherpepe]

This pull request includes typo corrections and minor wording adjustments across several .mdx files for better readability and accuracy. Specific changes are listed below for each file:

1. overview.mdx

   • Fixed: Changed "methods to so" to "methods so" for grammatical accuracy.

2. alerts.mdx

   • Fixed: Corrected "betwen" to "between" in the description of the Zapier integration.

3. dashboard-minting.mdx

   • Fixed: Changed "recieve" to "receive" for correct spelling.

4. dune-ai.mdx

   • Fixed: Changed "An non-empty" to "A non-empty" for proper article usage.

5. embeds.mdx

   • Fixed: Changed "stand alone" to "standalone" for accurate terminology.

6. upload-data.mdx

   • Fixed: Corrected "the we" to "we" for better sentence structure.

7. create-sankey-diagram.mdx

   • Fixed: Added clarity in code comments by rephrasing "check if name exists in the node name."