docs: escape [BD] in the one-unit resolver note

Cargo.lock

@@ -221,7 +221,7 @@ dependencies = [
 
 [[package]]
 name = "freemkv-unlock"
-version = "1.8.0"
+version = "1.8.1"
 dependencies = [
  "aes",
  "base64",
@@ -318,7 +318,7 @@ checksum = "3eaf3ede3fee6db1a4c2ee091bf8a8b4dccdc6d17f656fb07896ee72867612f2"
 
 [[package]]
 name = "libfreemkv"
-version = "1.8.0"
+version = "1.8.1"
 dependencies = [
  "aes",
  "base64",

src/keys/resolve.rs

@@ -551,7 +551,7 @@ fn scope_layout(ev: &KeyEvidence) -> (Option<&super::fmts::Layout>, Vec<(u32, u3
     (layout, clip)
 }
 
-/// KS-14 [BD] §3.9.3: one declared CPS unit is one Unit Key for every stream file, so the disc
+/// KS-14 \[BD\] §3.9.3: one declared CPS unit is one Unit Key for every stream file, so the disc
 /// is trusted as declared: the main title's samples ask the sources once, and the key that
 /// opens them keys every piece in scope. No per-piece probing (32 reads a piece: minutes of
 /// seeks on a many-clip disc). FMTS segment units are never samples; the segments are keyed