message: docs: fix sql templating typos
diff: @@ -119,7 +119,7 @@ In this section, we'll walkthrough the pre-defined Jinja macros in Superset.
  The `{{ current_username() }}` macro returns the username of the currently logged in user.
  -If you have caching enabled in your Superset configuration, then by defaul the the `username` value will be used
  +If you have caching enabled in your Superset configuration, then by default the the `username` value will be used
  by Superset when calculating the cache key. A cache key is a unique identifer that determines if there's a
  cache hit in the future and Superset can retrieve cached data.
  @@ -197,8 +197,8 @@ You can retrieve the value for a specific filter as a list using `{{ filter_valu
  This is useful if:
  -- you want to use a filter component to filter a query where the name of filter component column doesn't match the one in the select statement
  -- you want to have the ability for filter inside the main query for performance purposes
  +- You want to use a filter component to filter a query where the name of filter component column doesn't match the one in the select statement
  +- You want to have the ability for filter inside the main query for performance purposes
  Here's a concrete example:
  @@ -218,9 +218,9 @@ returns the operator specified in the Explore UI.
  This is useful if:
  -- you want to handle more than the IN operator in your SQL clause
  -- you want to handle generating custom SQL conditions for a filter
  -- you want to have the ability to filter inside the main query for speed purposes
  +- You want to handle more than the IN operator in your SQL clause
  +- You want to handle generating custom SQL conditions for a filter
  +- You want to have the ability to filter inside the main query for speed purposes
  Here's a concrete example:
  