[Rust] Fix schema typos.

Author: mjpt777

sbe-tool/src/test/resources/issue505.xml

@@ -1,11 +1,10 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <sbe:messageSchema xmlns:sbe="http://fixprotocol.io/2016/sbe"
-                   package="issue488"
-                   id="488"
+                   package="issue505"
+                   id="505"
                    version="0"
                    semanticVersion="1.0"
-                   description="issue 488 test case"
-                   byteOrder="bigEndian">
+                   description="issue 505 test case">
     <types>
         <composite name="messageHeader" description="header">
             <type name="blockLength" primitiveType="uint16"/>