message: Fix realm-parser CMake export
  The `install` command for `realm-parser` was using `EXPORT realm-parser` instead of `EXPORT realm` and this caused the `install(EXPORT realm)` command to not pick up realm-parser and create an `IMPORT` target for it in the exported `realm-config.cmake` file.
diff: @@ -377,7 +377,7 @@ target_include_directories(realm-parser PUBLIC ${PEGTL_INCLUDE_DIR})
  install(FILES ${REALM_PARSER_HEADERS}
  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/realm/parser
  COMPONENT devel)
  -install(TARGETS realm-parser EXPORT realm-parser
  +install(TARGETS realm-parser EXPORT realm
  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT devel)
  if(NOT REALM_SKIP_SHARED_LIB)
  add_library(realm-parser-shared SHARED ${REALM_PARSER_SOURCES} ${REALM_PARSER_HEADERS})
  