trace doc: Minor grammatical correction

Use the correct relative pronoun.

Signed-off-by: Sarat Mandava <mandavasarat@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Link: https://lore.kernel.org/r/20240321112757.17502-1-mandavasarat@gmail.com

Author: sarat-mandava

Documentation/trace/tracepoints.rst

@@ -27,7 +27,7 @@ the tracepoint site).
 
 You can put tracepoints at important locations in the code. They are
 lightweight hooks that can pass an arbitrary number of parameters,
-which prototypes are described in a tracepoint declaration placed in a
+whose prototypes are described in a tracepoint declaration placed in a
 header file.
 
 They can be used for tracing and performance accounting.