milo: put line breaks between step text strings

appengine/cmd/milo/swarming/testdata/build-running

 @@@CURRENT_TIMESTAMP@1457949601@@@
 
 @@@SEED_STEP recipe bootstrap@@@
 
 @@@STEP_CURSOR recipe bootstrap@@@
 
 @@@CURRENT_TIMESTAMP@1457949602@@@
 @@@STEP_STARTED@@@
 
 @@@SET_BUILD_PROPERTY@path_config@kitchen@@@
@@ skipping 46 matching lines @@
 @@@STEP_LOG_LINE@run_recipe@@@@
 
 @@@STEP_LOG_LINE@run_recipe@To run on Windows, you can put the JSON in a file and redirect the@@@
 
 @@@STEP_LOG_LINE@run_recipe@contents of the file into run_recipe.py, with the < operator.@@@
 
 @@@STEP_LOG_END@run_recipe@@@
 
 Running recipe with {u'slavename': u'abc', 'recipe': 'v8', u'mastername': u'client.v8', u'buildername': u'V8 Linux - builder'}
 
-@@@STEP_TEXT@<br/>running recipe: "v8"@@@
+@@@STEP_TEXT@running recipe: "v8"@@@
 
 @@@STEP_CURSOR setup_build@@@
 
 @@@CURRENT_TIMESTAMP@1457949604@@@
 @@@STEP_CLOSED@@@
 
 @@@SEED_STEP bot_update@@@
 
 @@@STEP_CURSOR bot_update@@@
 
 @@@CURRENT_TIMESTAMP@1457949605@@@
 @@@STEP_STARTED@@@
 
 python -u build/scripts/slave/bot_update.py --master client.v8 --builder 'V8 Linux - builder' --slave abc --spec $'cache_dir = None\nsolutions = [{\'custom_vars\': {\'chromium_trunk\': \'svn://svn-mirror.golo.chromium.org/chrome/trunk\'}, \'deps_file\': \'DEPS\', \'managed\': True, \'name\': \'v8\', \'url\': \'https://chromium.googlesource.com/v8/v8\'}]' --root v8 --revision_mapping_file /tmp/tmpnZr9kN.json --output_json /tmp/tmpHHthow.json --revision v8@HEAD --no_shallow --output_manifest
 in dir /tmp/kitchen-132832531:
  allow_subannotations: False
  cmd: ['python', '-u', 'build/scripts/slave/bot_update.py', '--master', 'client.v8', '--builder', 'V8 Linux - builder', '--slave', 'abc', '--spec', "cache_dir = None\nsolutions = [{'custom_vars': {'chromium_trunk': 'svn://svn-mirror.golo.chromium.org/chrome/trunk'}, 'deps_file': 'DEPS', 'managed': True, 'name': 'v8', 'url': 'https://chromium.googlesource.com/v8/v8'}]", '--root', 'v8', '--revision_mapping_file', '/tmp/tmpnZr9kN.json', '--output_json', '/tmp/tmpHHthow.json', '--revision', 'v8@HEAD', '--no_shallow', '--output_manifest']
  cwd: /tmp/kitchen-132832531
  name: bot_update
 full environment:
  HOME: /home/chrome-bot
  PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
  PWD: /
  USER: chrome-bot
  USERNAME: ${USER}