improve resource detector documentation #2055
Description
On the README of the resource detectors, there are no details about which resource attributes are being set and what are their respective keys, making it hard to identify what we have available.
Improve documentation, adding a table with the info for all resource detectors.
- Alibaba chore: update readme for alibaba resource detector #2056
- AWS docs(resource-detector-aws): update readme for aws resource detector #2060
- Azure docs(resource-detector-azure): update readme for azure resource detector #2057
- Container docs(resource-detector-container): update readme for container resource detector #2061
- GCP docs(resource-detector-gcp): update readme for gcp resource detector #2062
- Github docs(resource-detector-github): update readme for github resource detector #2064
- Instana docs(resource-detector-instana): update readme for instana resource detector #2063