docs: fix typo (#43)

README.md

@@ -4,7 +4,7 @@
 
 `typesafe-dynamodb` is a type-only library which replaces the type signatures of the AWS SDK's DynamoDB client. It substitutes `getItem`, `putItem`, `deleteItem` and `query` API methods with type-safe alternatives that are aware of the data in your tables and also adaptive to the semantics of the API request, e.g. by validating `ExpressionAttributeNames` and `ExpressionAttributeValues` contain all the values used in a `ConditionExpression` string, or by understanding the effect of a `ProjectionExpression` on the returned data type.
 
-The end goal is to provide types that have total understanding of the AWS DynamoDB API and enable full utilization of the TypeScript type system for modeling complex DynmaoDB tables, such as the application of union types and template string literals for single-table designs.
+The end goal is to provide types that have total understanding of the AWS DynamoDB API and enable full utilization of the TypeScript type system for modeling complex DynamoDB tables, such as the application of union types and template string literals for single-table designs.
 
 ![typesafe putItem ConditionExpression](img/put-item-expression.gif)