8025698: (fs) Typo in exception thrown by encode() in UnixPath.java

Reviewed-by: dxu, mduigou, henryjen, weijun
Contributed-by: ajuckel@gmail.com

src/solaris/classes/sun/nio/fs/UnixPath.java

@@ -145,7 +145,7 @@ class UnixPath
         }
         if (error) {
             throw new InvalidPathException(input,
-                "Malformed input or input contains unmappable chacraters");
+                "Malformed input or input contains unmappable characters");
         }
 
         // trim result to actual length if required