docs: fix capitalization in doxygen comments

Change-Id: Ibf5ee5119d12d60d382b0acef8dfd08277c18fcb
diff --git a/daemon/fw/retx-suppression-exponential.cpp b/daemon/fw/retx-suppression-exponential.cpp
index 6d8cdcb..39af1f5 100644
--- a/daemon/fw/retx-suppression-exponential.cpp
+++ b/daemon/fw/retx-suppression-exponential.cpp
@@ -46,9 +46,7 @@
   }
 
 public:
-  /** \brief if last transmission occurred within suppressionInterval,
-   *         retransmission will be suppressed
-   */
+  // If the last transmission occurred within this interval, retx will be suppressed
   RetxSuppressionExponential::Duration suppressionInterval;
 };