docs: small update for provider binary locations (#28413)
docs: small update for provider binary locations (#28413)

* docs: add note that provider binaries need to be placed in appropriate subdirectories under the default locations
rnaveiras/terraform,rnaveiras/terraform,ewbankkit/terraform,tommynsong/terraform,hashicorp/terraform,hashicorp/terraform,ewbankkit/terraform,ewbankkit/terraform,tommynsong/terraform,ewbankkit/terraform,hashicorp/terraform,tommynsong/terraform,rnaveiras/terraform