Update README.md

escape pipes in table

Author: dnozay

README.md

@@ -174,8 +174,8 @@ Also, the following settings are provided so you can fine tune the reports:
 
 |setting|default|values|description|
 |-|-|-|-|
-|`TEST_OUTPUT_VERBOSE`|`1`|`0|1|2`|Besides the XML reports generated by the test runner, a bunch of useful information is printed to the `sys.stderr` stream, just like the `TextTestRunner` does. Use this setting to choose between a verbose and a non-verbose output.|
-|`TEST_OUTPUT_DESCRIPTIONS`|`False`|`True|False`|If your test methods contains docstrings, you can display such docstrings instead of display the test name (ex: `module.TestCase.test_method`).<br>In order to use this feature, you have to enable verbose output by setting `TEST_OUTPUT_VERBOSE = 2`.<br>Only effects stdout and not XML output.|
+|`TEST_OUTPUT_VERBOSE`|`1`|`0\|1\|2`|Besides the XML reports generated by the test runner, a bunch of useful information is printed to the `sys.stderr` stream, just like the `TextTestRunner` does. Use this setting to choose between a verbose and a non-verbose output.|
+|`TEST_OUTPUT_DESCRIPTIONS`|`False`|`True\|False`|If your test methods contains docstrings, you can display such docstrings instead of display the test name (ex: `module.TestCase.test_method`).<br>In order to use this feature, you have to enable verbose output by setting `TEST_OUTPUT_VERBOSE = 2`.<br>Only effects stdout and not XML output.|
 |`TEST_OUTPUT_DIR`|`"."`|`<str>`|Tells the test runner where to put the XML reports. If the directory couldn't be found, the test runner will try to create it before generate the XML files.|
 |`TEST_OUTPUT_FILE_NAME`|`None`|`<str>`|Tells the test runner to output a single XML report with this filename under `os.path.join(TEST_OUTPUT_DIR, TEST_OUTPUT_FILE_NAME)`.<br>Please note that for long running tests, this will keep the results in memory for a longer time than multiple reports, and may use up more resources.|