Update specification.md

Co-authored-by: Ricardo Zanini <1538000+ricardozanini@users.noreply.github.com>

Author: cdavernas

specification.md

@@ -4512,7 +4512,7 @@ Property `instance` identifies the component within a workflow definition from w
 For example, in the above definition, the source `/states/0/actions/0` indicates that the error originates from the execution of the first action of the first state of the workflow definitions.
 This helps both users and implementers to describe and communicate the origins of errors without technical, technology/platform-specific knowledge or understanding.
 
-Property `type` is an URI used to identify the type of the error. 
+Property `type` is a URI used to identify the type of the error. 
 **For cross-compatibility concerns, the specification strongly encourage using the [default types](#default-error-types).**
 
 Property `status` identifies the error's status code.