use dhtnet.pc filename

Change-Id: If2d062f36fcd66dd7160856e1e1a3f21867f1bc0
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 161d535..594add7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -53,7 +53,7 @@
 
 # Install targets
 install (DIRECTORY include DESTINATION ${CMAKE_INSTALL_PREFIX})
-install (FILES ${CMAKE_CURRENT_BINARY_DIR}/opendht.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
+install (FILES ${CMAKE_CURRENT_BINARY_DIR}/dhtnet.pc DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
 
 if (BUILD_TESTING AND NOT MSVC)
     pkg_search_module(Cppunit REQUIRED IMPORTED_TARGET cppunit)