Fix type: Update tokens_ethereum_erc20.sql

[soispoke]

Brief comments on the purpose of your changes:

For Dune Engine V2
I've checked that:
General checks:

• I tested the query on dune.com after compiling the model with dbt compile (compiled queries are written to the target directory)
• I used "refs" to reference other models in this repo and "sources" to reference raw or decoded tables
• if adding a new model, I added a test
• the filename is unique and ends with .sql
• each sql file is a select statement and has only one view, table or function defined
• column names are lowercase_snake_cased
• if adding a new model, I edited the dbt project YAML file with new directory path for both models and seeds (if applicable)
• if adding a new model, I edited the alter table macro to display new database object (table or view) in UI explorer
• if adding a new materialized table, I edited the optimize table macro

Join logic:

• if joining to base table (i.e. ethereum transactions or traces), I looked to make it an inner join if possible

Incremental logic:

• I used is_incremental & not is_incremental jinja block filters on both base tables and decoded tables
  • where block_time >= date_trunc("day", now() - interval '1 week')
• if joining to base table (i.e. ethereum transactions or traces), I applied join condition where block_time >= date_trunc("day", now() - interval '1 week')
• if joining to prices view, I applied join condition where minute >= date_trunc("day", now() - interval '1 week')

[masquot]

lgtm