Update chapter2.adoc

add citation for Smstateen

Signed-off-by: Aote Jin <[email protected]>

chapter2.adoc

@@ -226,7 +226,7 @@ The `nmip`, `mprven`, `stoptime`, `stopcount`, `ebreakm` and `cetrig` fields in
 
 ==== Extension of Sdtrig CSR
 
-The Smtdeleg cite:[smtdeleg] and Smstateen extensions define the process for delegating triggers to modes with lower privilege than M-mode. The Sdsec requires both extensions to securely delegate Sdtrig triggers to supervisor domain.
+The Smtdeleg cite:[smtdeleg] and Smstateen cite:[smtdeleg] extensions define the process for delegating triggers to modes with lower privilege than M-mode. The Sdsec requires both extensions to securely delegate Sdtrig triggers to supervisor domain.
 
 [NOTE]
 When M-mode enables debugging for supervisor domain, it can optionally delegate the triggers to the supervisor domain, allowing an external debugger with S-mode privilege to configure these triggers.