Merge pull request #448 from lyknode/fix/typo

Fix typo in manpage

man/man5/monitorix.conf.5

@@ -3176,7 +3176,7 @@ You must use the same name of service that you defined in \fBlist\fP followed by
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 The third value is the first regular expression that Monitorix will use to match lines. It's normally used as the date that appears in the log file.
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-The forth and last value is a group of regular expressions separated by a plus sign. You can prefix a regular expresion with \fIi:\fP in order to note that it must be insensitive case.
+The forth and last value is a group of regular expressions separated by a plus sign. You can prefix a regular expression with \fIi:\fP in order to note that it must be insensitive case.
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 You can create multiple definitions of the same service with different values, so you are able to combine similar services into one single metric.
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