Update mesh.proto

Fixed typo in comments

mesh.proto

@@ -17,7 +17,7 @@ option java_outer_classname = "MeshProtos";
  */
 message Position {
   /*
-   * The new preferred location encoding, divide by 1e-7 to get degrees
+   * The new preferred location encoding, multiply by 1e-7 to get degrees
    * in floating point
    */
   sfixed32 latitude_i = 1;