docs: fix capitalization in doxygen comments

Change-Id: Ibf5ee5119d12d60d382b0acef8dfd08277c18fcb
diff --git a/tests/daemon/table/dead-nonce-list.t.cpp b/tests/daemon/table/dead-nonce-list.t.cpp
index 7df4ec8..6c6add2 100644
--- a/tests/daemon/table/dead-nonce-list.t.cpp
+++ b/tests/daemon/table/dead-nonce-list.t.cpp
@@ -125,7 +125,7 @@
     addNonceEvent = getScheduler().schedule(ADD_INTERVAL, [this] { addNonce(); });
   }
 
-  /** \brief advance clocks by LIFETIME*t
+  /** \brief Advance clocks by `LIFETIME*t`.
    */
   void
   advanceClocksByLifetime(double t)