[B028-doc-update] Update documentation for B028 (#14338)

## Summary
Resolves #14289
The documentation for B028 no_explicit_stacklevel is updated to be more
clear.

---------

Co-authored-by: dylwil3 <dylwil3@gmail.com>

crates/ruff_linter/src/rules/flake8_bugbear/rules/no_explicit_stacklevel.rs

@@ -11,10 +11,11 @@ use crate::checkers::ast::Checker;
 ///
 /// ## Why is this bad?
 /// The `warnings.warn` method uses a `stacklevel` of 1 by default, which
-/// limits the rendered stack trace to that of the line on which the
-/// `warn` method is called.
+/// will output a stack frame of the line on which the "warn" method
+/// is called. Setting it to a higher number will output a stack frame
+/// from higher up the stack.
 ///
-/// It's recommended to use a `stacklevel` of 2 or higher, give the caller
+/// It's recommended to use a `stacklevel` of 2 or higher, to give the caller
 /// more context about the warning.
 ///
 /// ## Example