docs: fix capitalization in doxygen comments

Change-Id: Ibf5ee5119d12d60d382b0acef8dfd08277c18fcb
diff --git a/daemon/rib/readvertise/client-to-nlsr-readvertise-policy.hpp b/daemon/rib/readvertise/client-to-nlsr-readvertise-policy.hpp
index be76597..963c9c1 100644
--- a/daemon/rib/readvertise/client-to-nlsr-readvertise-policy.hpp
+++ b/daemon/rib/readvertise/client-to-nlsr-readvertise-policy.hpp
@@ -30,12 +30,12 @@
 
 namespace nfd::rib {
 
-/** \brief a policy to readvertise routes registered by end hosts into NLSR
+/** \brief A policy to readvertise routes registered by end hosts into NLSR.
  */
 class ClientToNlsrReadvertisePolicy : public ReadvertisePolicy
 {
 public:
-  /** \brief advertise if the route's origin is client
+  /** \brief Advertise if the route's origin is client.
    *
    *  If the route origin is "client" (typically from auto prefix propagation), readvertise it
    *  using the default signing identity.