AWS SDK common and dynamodb conventions (#1422)

Co-authored-by: William Armiros <54150514+willarmiros@users.noreply.github.com>
Co-authored-by: Nikita Salnikov-Tarnovski <gnikem@gmail.com>
Co-authored-by: Armin Ruech <armin.ruech@dynatrace.com>

CHANGELOG.md

@@ -30,6 +30,7 @@ release.
 
 ### Semantic Conventions
 
+- Add semantic conventions for AWS SDK operations and DynamoDB ([#1422](https://github.com/open-telemetry/opentelemetry-specification/pull/1422))
 - Add details for filling semantic conventions for AWS Lambda ([#1442](https://github.com/open-telemetry/opentelemetry-specification/pull/1442))
 - Update semantic conventions to distinguish between int and double ([#1550](https://github.com/open-telemetry/opentelemetry-specification/pull/1550))
 - Add semantic convention for AWS ECS task revision ([#1581](https://github.com/open-telemetry/opentelemetry-specification/pull/1581))

semantic_conventions/README.md

@@ -4,10 +4,14 @@ The YAML descriptions of semantic convention contained in this directory are int
 be used by the various OpenTelemetry language implementations to aid in automatic
 generation of semantics-related code.
 
+## Writing semantic conventions
+
+Refer to the [syntax](./syntax.md) for how to write the YAML files for semantic conventions.
+
 ## Generation
 
 These YAML files are used by the make target `table-generation` to generate consistently
-formattted Markdown tables for all semantic conventions in the specification. Run it from the root of this repository using the command
+formatted Markdown tables for all semantic conventions in the specification. Run it from the root of this repository using the command
 
 ```
 make table-generation