Documentation fixes (#1217)

docs/usage.asciidoc

@@ -145,7 +145,7 @@ The supported request specific options are:
 _Default:_ `null`
 
 |`requestTimeout`
-|`number` - Max request timeout for the request, it overrides the client default. +
+|`number` - Max request timeout for the request in milliseconds, it overrides the client default. +
 _Default:_ `30000`
 
 |`maxRetries`
@@ -194,32 +194,64 @@ console.log(errors)
 
 You can find the errors exported by the client in the table below.
 
-[cols=2*]
+[cols=3*]
 |===
+|*Error*
+|*Description*
+|*Properties*
+
 |`ElasticsearchClientError`
 |Every error inherits from this class, it is the basic error generated by the client.
+a|* `name` - `string`
+* `message` - `string`
 
 |`TimeoutError`
 |Generated when a request exceeds the `requestTimeout` option.
+a|* `name` - `string`
+* `message` - `string`
+* `meta` - `object`, contains all the information about the request
 
 |`ConnectionError`
 |Generated when an error occurs during the request, it can be a connection error or a malformed stream of data.
+a|* `name` - `string`
+* `message` - `string`
+* `meta` - `object`, contains all the information about the request
 
 |`RequestAbortedError`
 |Generated if the user calls the `request.abort()` method.
+a|* `name` - `string`
+* `message` - `string`
+* `meta` - `object`, contains all the information about the request
 
 |`NoLivingConnectionsError`
 |Given the configuration, the ConnectionPool was not able to find a usable Connection for this request.
+a|* `name` - `string`
+* `message` - `string`
+* `meta` - `object`, contains all the information about the request
 
 |`SerializationError`
 |Generated if the serialization fails.
+a|* `name` - `string`
+* `message` - `string`
+* `data` - `object`, the object to serialize
 
 |`DeserializationError`
 |Generated if the deserialization fails.
+a|* `name` - `string`
+* `message` - `string`
+* `data` - `string`, the string to deserialize
 
 |`ConfigurationError`
 |Generated if there is a malformed configuration or parameter.
+a|* `name` - `string`
+* `message` - `string`
 
 |`ResponseError`
 |Generated when in case of a `4xx` or `5xx` response.
+a|* `name` - `string`
+* `message` - `string`
+* `meta` - `object`, contains all the information about the request
+* `body` - `object`, the response body
+* `statusCode` - `object`, the response headers
+* `headers` - `object`, the response status code
 |===