[PATCH bpf-next] bpf, docs: Fix the struct btf_var name in btf.rst

[Karl Mehltretter <kmehltretter@gmail.com>]

struct btf_variable does not exist; the name is struct btf_var.

Use it.

Fixes: f063c889c945 ("bpf: add specification for BTF Var and DataSec kinds")
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@gmail.com>
---
 Documentation/bpf/btf.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/bpf/btf.rst b/Documentation/bpf/btf.rst
index 3f05f17990ad..004aa1058d85 100644
--- a/Documentation/bpf/btf.rst
+++ b/Documentation/bpf/btf.rst
@@ -416,7 +416,7 @@ If the function has variable arguments, the last parameter is encoded with
   * ``info.vlen``: 0
   * ``type``: the type of the variable
 
-``btf_type`` is followed by a single ``struct btf_variable`` with the
+``btf_type`` is followed by a single ``struct btf_var`` with the
 following data::
 
     struct btf_var {
-- 
2.53.0