Bias-free language

[WoutDLN]

Add a brief reminder to avoid biased language. Esp.:

• no 'he' for people of unknown gender
• prefer 'they', and remember that in most cases the sentence can be rephrased to avoid the issue entirely
• for more details, and tips on how to avoid other biases, refer to the APA's recommendations: https://apastyle.apa.org/style-grammar-guidelines/bias-free-language