Update README.md

Author: SimplyProgrammer

README.md

@@ -100,7 +100,7 @@ flag: true
 ```
 some.package.Foo 55D 455.45 236.12F T;
 ``` 
-## After introduction od variables in 1.1.5 and scope in 1.2.0: <br>
+## After introduction of variables in 1.1.5 and scope in 1.2.0: <br>
 Serialized via **SerialX for SerialX (protocol + scope):**
 ```
 some.package.Foo {