Update processor/transformprocessor/README.md

Author: odubajDT

processor/transformprocessor/README.md

@@ -420,7 +420,7 @@ To aggregate only using a specified set of attributes, you can use `keep_matchin
 
 `aggregate_on_attribute_value(function, attribute, values, newValue)`
 
-The `aggregate_on_attribute_value` function aggreates all datapoints in the metric containing the attribute `attribute` with one of the values present in the `values` parameter. `function` is a case-sensitive string that represents the aggregation function.
+The `aggregate_on_attribute_value` function aggregates all datapoints in the metric containing the attribute `attribute` with one of the values present in the `values` parameter. `function` is a case-sensitive string that represents the aggregation function.
 
 Firstly, `attribute` values with one of the values present in `values` are substituted by `newValue` for all datapoints. Afterwards all datapoints are aggregated depending on the attributes.