Made hex byte offset lowercase

Author: max-amb

src/uu/od/src/input_offset.rs

@@ -51,8 +51,8 @@ impl InputOffset {
         match (self.radix, self.label) {
             (Radix::Decimal, None) => format!("{:07}", self.byte_pos),
             (Radix::Decimal, Some(l)) => format!("{:07} ({l:07})", self.byte_pos),
-            (Radix::Hexadecimal, None) => format!("{:06X}", self.byte_pos),
-            (Radix::Hexadecimal, Some(l)) => format!("{:06X} ({l:06X})", self.byte_pos),
+            (Radix::Hexadecimal, None) => format!("{:06x}", self.byte_pos),
+            (Radix::Hexadecimal, Some(l)) => format!("{:06x} ({l:06x})", self.byte_pos),
             (Radix::Octal, None) => format!("{:07o}", self.byte_pos),
             (Radix::Octal, Some(l)) => format!("{:07o} ({l:07o})", self.byte_pos),
             (Radix::NoPrefix, None) => String::new(),