Fix the testplan link in dvsim code

- Changes were made to where the dv doc was placed. This is a
corresponding fix in the dvsim codebase to get the link to the testplan
from the regression results page working correctly.

Signed-off-by: Srikrishna Iyer <sriyer@google.com>
diff --git a/util/dvsim/SimCfg.py b/util/dvsim/SimCfg.py
index dd81650..7d00ede 100644
--- a/util/dvsim/SimCfg.py
+++ b/util/dvsim/SimCfg.py
@@ -621,7 +621,7 @@
             else:
                 testplan = "https://{}/{}".format(self.doc_server,
                                                   self.rel_path)
-                testplan = testplan.replace("/dv", "/doc/dv_plan/#testplan")
+                testplan = testplan.replace("/dv", "/doc/dv/#testplan")
 
             results_str += f"### [Testplan]({testplan})\n"