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Author: SusiJo

docs/usage.md

@@ -152,7 +152,7 @@ The necessary fields in order are:
 You can optionally supply:
 
 - `blocking` - semicolon-delimited, any additional variables (also observation columns) that should be modelled alongside the contrast variable
-- `exclude_samples_col` and `exclude_samples_values` - the former being a valid column in the samples sheet, the latter a semicolon-delimited list of values in that column which should be used to select samples prior to differential modelling. This is helpful where certain samples need to be exluded prior to analysis of a given contrast.
+- `exclude_samples_col` and `exclude_samples_values` - the former being a valid column in the samples sheet, the latter a semicolon-delimited list of values in that column which should be used to select samples prior to differential modelling. This is helpful where certain samples need to be excluded prior to analysis of a given contrast.
 
 ### YAML contrasts file format