Fix cargo fmt formatting in Display impls for error types

Co-authored-by: chase-manning <53957795+chase-manning@users.noreply.github.com>

Author: Copilot

pleco/src/core/piece_move.rs

@@ -211,7 +211,10 @@ pub struct BitMoveFromStrError;
 
 impl fmt::Display for BitMoveFromStrError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "invalid move string, expected format like 'e2e4' or 'a7a8q'")
+        write!(
+            f,
+            "invalid move string, expected format like 'e2e4' or 'a7a8q'"
+        )
     }
 }
 

pleco/src/core/sq.rs

@@ -430,6 +430,9 @@ pub struct SQFromStrError;
 
 impl fmt::Display for SQFromStrError {
     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
-        write!(f, "invalid square string, expected format like 'a1' through 'h8'")
+        write!(
+            f,
+            "invalid square string, expected format like 'a1' through 'h8'"
+        )
     }
 }