chore(java): update variable name to api_shortname in README template (#1323)#835

gcf-merge-on-green[bot] merged 1 commit intomaingoogleapis/java-logging:mainfrom

owl-bot-update-lock-7f737996c88586c499f7b0c25294c760f9f5eec092289a0e08d2d3f42a069ebbgoogleapis/java-logging:owl-bot-update-lock-7f737996c88586c499f7b0c25294c760f9f5eec092289a0e08d2d3f42a069ebbCopy head branch name to clipboard