Address misused before nouns and spelling mistake

feature/dynamodb/expression/condition.go

@@ -46,10 +46,10 @@ const (
 	containsCond
 )
 
-// DynamoDBAttributeType specifies the type of an DynamoDB item attribute. This
+// DynamoDBAttributeType specifies the type of a DynamoDB item attribute. This
 // enum is used in the AttributeType() function in order to be explicit about
 // the DynamoDB type that is being checked and ensure compile time checks.
-// More Informatin at http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.OperatorsAndFunctions.html#Expressions.OperatorsAndFunctions.Functions
+// More Information at http://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.OperatorsAndFunctions.html#Expressions.OperatorsAndFunctions.Functions
 type DynamoDBAttributeType string
 
 const (

feature/dynamodb/expression/expression.go

@@ -490,7 +490,7 @@ func (e Expression) returnExpression(expressionType expressionType) *string {
 }
 
 // exprNode are the generic nodes that represents both Operands and
-// Conditions. The purpose of exprNode is to be able to call an generic
+// Conditions. The purpose of exprNode is to be able to call a generic
 // recursive function on the top level exprNode to be able to determine a root
 // node in order to deduplicate name aliases.
 // fmtExpr is a string that has escaped characters to refer to

feature/dynamodb/expression/operand.go

@@ -241,7 +241,7 @@ func Value(value interface{}) ValueBuilder {
 //
 // The ValueBuilderOptions functional options parameter allows you to specify
 // how the value will be encoded. Including options like AttributeValue
-// encoding struct tag. If value is already an DynamoDB AttributeValue,
+// encoding struct tag. If value is already a DynamoDB AttributeValue,
 // encoding options will have not effect.
 //
 // Empty slices and maps will be encoded as their respective empty types.AttributeValue