Merge pull request #793 from google/example-fix

Link to the apache log config docs and fix a bad comment.

README.md

@@ -83,7 +83,7 @@ alerting tool, like [Prometheus](http://prometheus.io).
 > you bring them down to the monitoring system?
 
 [It deals with the instrumentation so the engineers don't have
-to!](http://www.imdb.com/title/tt0151804/quotes/qt0386890)  It has the
+to!](http://www.imdb.com/title/tt0151804/quotes/?item=qt0386890)  It has the
 extraction skills!  It is good at dealing with log files!!
 
 ## Read More

docs/Deploying.md

@@ -115,7 +115,7 @@ file { mtail_programme:
 }
 ```
 
-Alternatively, if you're using `scp` or some similiar method to copy the programme files without a receiver, then either follow it with a `ssh $host 'killall -HUP mtail'` or use a tool like [`inotifywait`](https://linux.die.net/man/1/inotifywait) in a side process next to mtail to watch for changes and send the reload signal.
+Alternatively, if you're using `scp` or some similar method to copy the programme files without a receiver, then either follow it with a `ssh $host 'killall -HUP mtail'` or use a tool like [`inotifywait`](https://linux.die.net/man/1/inotifywait) in a side process next to mtail to watch for changes and send the reload signal.
 
 ```shell
 inotifywait -m /etc/mtail/progs | while read event; do killall -HUP mtail; done

examples/apache_common.mtail

@@ -1,5 +1,6 @@
 # Parser for the common apache log format as follow.
 # LogFormat "%h %l %u %t \"%r\" %>s %b %D \"%{Referer}i\" \"%{User-agent}i\"
+# https://httpd.apache.org/docs/2.4/mod/mod_log_config.html
 counter apache_http_requests_total by request_method, http_version, status_code
 counter apache_http_bytes_total by request_method, http_version, status_code
 gauge apache_http_response_time by remote_host, request_method, request_uri, status_code, user_agent
@@ -9,7 +10,7 @@ gauge apache_http_response_size by remote_host, request_method, request_uri, sta
 /(?P<remote_host>[0-9A-Za-z\.:-]+) / + # %h
 /(?P<remote_logname>[0-9A-Za-z-]+) / + # %l
 /(?P<remote_username>[0-9A-Za-z-]+) / + # %u
-/\[(?P<timestamp>\d{2}\/\w{3}\/\d{4}:\d{2}:\d{2}:\d{2} (\+|-)\d{4})\] / + # %u
+/\[(?P<timestamp>\d{2}\/\w{3}\/\d{4}:\d{2}:\d{2}:\d{2} (\+|-)\d{4})\] / + # %t
 /"(?P<request_method>[A-Z]+) (?P<request_uri>\S+) (?P<http_version>HTTP\/[0-9\.]+)" / + # \"%r\"
 /(?P<status_code>\d{3}) / + # %>s
 /((?P<response_size>\d+)|-) / + # %b