consistent first-upper case spelling of Research Software Engineering

competencies.md

@@ -1241,7 +1241,7 @@ to and handled by researchers and RSEs working in different environments within
 an organisation and how the organisations themselves can contribute.
 We recognise that this is a challenging area to gain a detailed view of
 and that this is still a significant generalisation.
-We talk about the "research software engineer" as a single entity but as the field expands,
+We talk about the "Research Software Engineer" as a single entity but as the field expands,
 we expect to see more roles and job titles emerging around the RSE concept,
 many of which fit under the wider umbrella of research technology professionals (RTPs) [@ukri_rtp] [@techniciancommitment].
 Examples are different RSE-like computational roles of