Update README.md

Author: thornjad

README.md

@@ -60,7 +60,7 @@ This will install `http-server` globally so that it may be run from the command
 |`-P` or `--proxy` |Proxies all requests which can't be resolved locally to the given url. e.g.: -P http://someurl.com | |
 |`--proxy-options` Pass proxy [options](https://github.com/http-party/node-http-proxy#options) using nested dotted objects. e.g.: --proxy-options.secure false
 
-`--username` |Username for basic authentication | |
+|`--username` |Username for basic authentication | |
 |`--password` |Password for basic authentication | |
 |`-S` or `--ssl` |Enable https.| |
 |`-C` or `--cert` |Path to ssl cert file |`cert.pem` |