Fix ref in JOSS paper #1264

Job	Run time
Web Tests	3m 47s
Tests (clang++, test-native-regular)	27m 6s
Tests (clang++, test-native-fulldebug)	4m 11s
Paper Draft	36s
Build Docker Image	7m 53s
Tests (clang++, test-native-opt)	47m 57s
Measure Test Coverage	4m 34s
Tests (clang++, test-examples)	9m 18s
Tests (clang++, test-demos)	2m 52s
Test Tidy Enforcement on macOS	6m 24s
Enforce Tidyness	1m 22s
Tests (g++, test-native-regular)	35m 33s
Tests (g++, test-native-fulldebug)	39m 36s
Tests (g++, test-native-opt)	52m 30s
Tests (g++, test-examples)	9m 16s
Tests (g++, test-demos)	2m 36s
Test Documentation Build	11m 43s
Deploy Documentation Coverage	0s
Deploy to DockerHub	0s
	4h 27m 14s

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