docs: fix extra hyphen

ojeda · ojeda · commit b0e82a0c65ba · 2021-07-04T14:47:09.000+02:00
Signed-off-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
diff --git a/Documentation/kbuild/kbuild.rst b/Documentation/kbuild/kbuild.rst
@@ -58,7 +58,7 @@ CFLAGS_MODULE
 Additional module specific options to use for $(CC).
 
 KRUSTFLAGS
------------
+----------
 Additional options to the Rust compiler (for built-in and modules).
 
 LDFLAGS_MODULE
