[aws-for-fluent-bit] Unaligned documentation

[FabrizioCafolla]

Describe the bug

Reading the documentation in README.md the extraInputs parameter is defined as a root parameter while in the template configmap.yaml it is defined as input.extraInputs

Steps to reproduce Go to README.md and check extraInputs parameter

Expected outcome On the README.md file set parameter input.extraInputs

Environment

• Chart name: aws-for-fluent-bit
• Chart version: 0.1.32
• Kubernetes version: -
• Using EKS (yes/no), if so version? -

Additional Context: