fix(robocop): update robocop documentation urls

Co-authored-by: Bartlomiej Hirsz <bartlomiej.hirsz@iqvia.com>

Author: d-biehl

packages/language_server/src/robotcode/language_server/robotframework/parts/robocop_diagnostics.py

@@ -233,25 +233,25 @@ def run_check(self, ast_model, filename, source=None):  # type: ignore
         return result
 
     def get_code_description(self, version: Version, issue: Any) -> Optional[CodeDescription]:
+        if hasattr(issue, "rule") and hasattr(issue.rule, "docs_url"):  # since robocop 6.13
+            return CodeDescription(issue.rule.docs_url)
+
         if version < (3, 0):
             return None
 
         version_letter = "v" if version.major >= 6 else ""
 
-        base = f"https://robocop.readthedocs.io/en/{version_letter}{version.major}.{version.minor}.{version.patch}"
-
-        if version < (4, 0):
-            return CodeDescription(href=f"{base}/rules.html#{issue.name}".lower())
-
-        if version < (4, 1):
-            return CodeDescription(href=f"{base}/rules.html#{issue.name}-{issue.severity.value}{issue.rule_id}".lower())
-
-        if version < (4, 1, 1):
-            return CodeDescription(
-                href=f"{base}/rules_list.html#{issue.name}-{issue.severity.value}{issue.rule_id}".lower()
-            )
+        base = f"https://robocop.dev/{version_letter}{version.major}.{version.minor}.{version.patch}"
 
-        if version < (6, 0):
-            return CodeDescription(href=f"{base}/rules_list.html#{issue.name}".lower())
+        if version >= (6, 0):
+            href = f"{base}/rules/rules_list.html#{issue.rule.rule_id}-{issue.rule.name}"
+        elif version >= (4, 1, 1):
+            href = f"{base}/rules_list.html#{issue.name}"
+        elif version >= (4, 1):
+            href = f"{base}/rules_list.html#{issue.name}-{issue.severity.value}{issue.rule_id}"
+        elif version >= (4, 0):
+            href = f"{base}/rules.html#{issue.name}-{issue.severity.value}{issue.rule_id}"
+        else:
+            href = f"{base}/rules.html#{issue.name}"
 
-        return CodeDescription(href=f"{base}/rules/rules_list.html#{issue.rule.rule_id}-{issue.rule.name}".lower())
+        return CodeDescription(href=href.lower())