Corrected path error on deleting cypress

fpm-alpine/Dockerfile

@@ -23,5 +23,5 @@ COPY redis.config.php /usr/src/nextcloud/config/redis.config.php
 
 # temporary. remove cypress files for code integrity.
 RUN set -x; \
-    rm -rf /var/www/html/apps/cypress; \
-    rm -rf /var/www/html/apps/cypress.json
+    rm -rf /var/www/html/apps/viewer/cypress; \
+    rm -rf /var/www/html/apps/viewer/cypress.json