docs: agent/watches: minor fixes
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@ -15,7 +15,7 @@ executable. As an example, you could watch the status of health checks and
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notify an external system when a check is critical.
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Watches are implemented using blocking queries in the [HTTP API](/docs/agent/http.html).
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Agent's automatically make the proper API calls to watch for changes,
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Agents automatically make the proper API calls to watch for changes,
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and inform a handler when the data view has updated.
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Watches can be configured as part of the [agent's configuration](/docs/agent/options.html),
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@ -36,7 +36,7 @@ The watch specification specifies the view of data to be monitored.
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Once that view is updated the specified handler is invoked. The handler
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can be any executable.
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A handler should read it's input from stdin, and expect to read
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A handler should read its input from stdin, and expect to read
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JSON formatted data. The format of the data depends on the type of the
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watch. Each watch type documents the format type, and because they
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map directly to an HTTP API, handlers should expect the input to
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@ -280,7 +280,7 @@ An example of the output of this command:
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### Type: checks
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The "checks" watch type is used to monitor the checks of a given
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service or in a specific state. It optionally takes the "service"
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service or those in a specific state. It optionally takes the "service"
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parameter to filter to a specific service, or "state" to filter
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to a specific state. By default, it will watch all checks.
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