change RequestID to RequestId

Change-Id: Icb426614f391d2828c906155a0d37fd7da7c13f8
diff --git a/src/detail/ca-memory.cpp b/src/detail/ca-memory.cpp
index a293a18..f2a3b12 100644
--- a/src/detail/ca-memory.cpp
+++ b/src/detail/ca-memory.cpp
@@ -36,7 +36,7 @@
 }
 
 RequestState
-CaMemory::getRequest(const RequestID& requestId)
+CaMemory::getRequest(const RequestId& requestId)
 {
   auto search = m_requests.find(requestId);
   if (search == m_requests.end()) {
@@ -70,7 +70,7 @@
 }
 
 void
-CaMemory::deleteRequest(const RequestID& requestId)
+CaMemory::deleteRequest(const RequestId& requestId)
 {
   auto search = m_requests.find(requestId);
   auto keyName = search->second.m_cert.getKeyName();