Fix a bug of not deleting previously added config files on disk

Bug: 73304022
Test: statsd_test
Change-Id: Ic024d40da97ed79cb405a5da1f0c9abac0436b34

bin/src/config/ConfigManager.cpp

diff --git a/bin/src/config/ConfigManager.cpp b/bin/src/config/ConfigManager.cpp
index 06ff603..fbb0fdd 100644
--- a/bin/src/config/ConfigManager.cpp
+++ b/bin/src/config/ConfigManager.cpp
@@ -101,7 +101,7 @@
 }
 
 void ConfigManager::remove_saved_configs(const ConfigKey& key) {
-    string suffix = StringPrintf("%d-%lld", key.GetUid(), (long long)key.GetId());
+    string suffix = StringPrintf("%d_%lld", key.GetUid(), (long long)key.GetId());
     StorageManager::deleteSuffixedFiles(STATS_SERVICE_DIR, suffix.c_str());
 }