rule: Fix error typo

Signed-off-by: Enrique Llorente <[email protected]>

Author: qinqon

src/rule/message.rs

@@ -33,9 +33,9 @@ impl<'a, T: AsRef<[u8]> + 'a> Parseable<RuleMessageBuffer<&'a T>>
 {
     fn parse(buf: &RuleMessageBuffer<&'a T>) -> Result<Self, DecodeError> {
         let header = RuleHeader::parse(buf)
-            .context("failed to parse link message header")?;
+            .context("failed to parse rule message header")?;
         let attributes = Vec::<RuleAttribute>::parse(buf)
-            .context("failed to parse link message NLAs")?;
+            .context("failed to parse rule message NLAs")?;
         Ok(RuleMessage { header, attributes })
     }
 }