bpf: Remove trailing whitespace in verifier.rst

Remove trailing whitespace in Documentation/bpf/verifier.rst.

Signed-off-by: Abhinav Saxena <xandfury@gmail.com>
Link: https://lore.kernel.org/r/20241107063708.106340-2-xandfury@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>

Documentation/bpf/verifier.rst

@@ -507,7 +507,7 @@ Notes:
   from the parent state to the current state.
 
 * Details about REG_LIVE_READ32 are omitted.
-  
+
 * Function ``propagate_liveness()`` (see section :ref:`read_marks_for_cache_hits`)
   might override the first parent link. Please refer to the comments in the
   ``propagate_liveness()`` and ``mark_reg_read()`` source code for further
@@ -571,7 +571,7 @@ works::
   are considered equivalent.
 
 .. _read_marks_for_cache_hits:
-  
+
 Read marks propagation for cache hits
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~