Fix #190 - ci badge linking master branch #89

Job	Run time
ci / check if job needs to run	2s
ci / prepare test matrix	9s
ci / MOODLE_310_STABLE - pgsql - php 7.2 - tool_crawler	2m 56s
ci / MOODLE_311_STABLE - mariadb - php 7.3 - tool_crawler	2m 41s
ci / MOODLE_34_STABLE - pgsql - php 7.1 - tool_crawler	2m 30s
ci / MOODLE_35_STABLE - mariadb - php 7.1 - tool_crawler	2m 38s
ci / MOODLE_35_STABLE - pgsql - php 7.1 - tool_crawler	2m 18s
ci / MOODLE_35_STABLE - mariadb - php 7.2 - tool_crawler	2m 45s
ci / MOODLE_35_STABLE - pgsql - php 7.2 - tool_crawler	2m 23s
ci / MOODLE_36_STABLE - mariadb - php 7.1 - tool_crawler	2m 36s
ci / MOODLE_37_STABLE - pgsql - php 7.2 - tool_crawler	2m 40s
ci / MOODLE_38_STABLE - mariadb - php 7.3 - tool_crawler	3m 10s
ci / MOODLE_39_STABLE - mariadb - php 7.2 - tool_crawler	3m 4s
ci / MOODLE_39_STABLE - pgsql - php 7.2 - tool_crawler	3m 0s
ci / MOODLE_39_STABLE - mariadb - php 7.3 - tool_crawler	2m 47s
ci / MOODLE_400_STABLE - pgsql - php 7.3 - tool_crawler	2m 49s
ci / MOODLE_39_STABLE - pgsql - php 7.3 - tool_crawler	2m 46s
ci / MOODLE_401_STABLE - pgsql - php 7.4 - tool_crawler	2m 57s
ci / MOODLE_401_STABLE - mariadb - php 7.4 - tool_crawler	3m 9s
ci / MOODLE_401_STABLE - pgsql - php 8.0 - tool_crawler	3m 24s
ci / MOODLE_401_STABLE - mariadb - php 8.0 - tool_crawler	3m 15s
ci / Release to the Moodle plugin directory	0s
	53m 59s

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