Improve EndpointRequest matcher documentation #49520
Description
EndpointRequest exposes factory methods for creating security matchers in the context of Actuator endpoints. We should clarify that such matchers are not as focused as method-level security but rely on pattern matching and will match the endpoint path itself ("actuator/endpoint") as well as everything beneath it ("actuator/endpoint/**").
Some endpoints do declare nested paths, others don't. While pattern matching for security matchers is the most popular (and expected) approach, here we should make this behavior more explicit.