Using @see annotation with content other than an enumeration class name results in a runtime error.

[wenyuantc]

First use, an error occurred while generating the documentation.

Your Environment(Your Using Environment)

• smart-doc version: 2.5.1
• plugin version (e.g. smart-doc-maven-plugin or smart-doc-gradle-plugin): smart-doc-maven-plugin
• build tool version(maven or gradle): maven
• smart-doc.json configuration:

{
  "outPath": "src/main/resources/static/apiDoc"
}

Expected Behavior(Expected Outcome)

Generate HTML documents.

Current Behavior(Current Outcome)

An exception occurs: java.lang.RuntimeException: enum not existed

Steps to Reproduce (Steps to Generate the Bug, Please Provide Code Examples if Possible)

Describe in detail the steps to reproduce this issue.

[shalousun]

@wenyuantc It seems that you have a field marked with @see, but the content is empty.