corsika_data to snake_case

corsika/detail/framework/utility/CorsikaData.inl

@@ -12,7 +12,7 @@
 #include <stdexcept>
 #include <string>
 
-std::string corsika::CorsikaData(std::string const& key) {
+std::string corsika::corsika_data(std::string const& key) {
   if (auto const* p = std::getenv("CORSIKA_DATA"); p != nullptr) {
     auto const path = std::string(p) + "/" + key;
     return path;

corsika/framework/utility/CorsikaData.hpp

@@ -14,7 +14,7 @@ namespace corsika {
   /**
    * returns the full path of the file \p filename within the CORSIKA_DATA directory
    */
-  std::string CorsikaData(std::string const& filename);
+  std::string corsika_data(std::string const& filename);
 } // namespace corsika
 
 #include <corsika/detail/framework/utility/CorsikaData.inl>
\ No newline at end of file