README.md: remove -

README.md

@@ -241,7 +241,7 @@ main.eas:
 ### #assemble
 
 When writing contract constructors and advanced CALL scenarios, it can be necessary to
-include sub-program bytecode as-is. The `#assemble` directive can do this for you.
+include subprogram bytecode as-is. The `#assemble` directive can do this for you.
 
 Using `#assemble` runs the assembler on the specified file, and includes the resulting
 bytecode into the current program. Labels of the subprogram will start at offset zero.