correct the expansion of the RTIC acronym

embedded-workshop-book/src/rtic-hello.md

@@ -1,6 +1,6 @@
 # RTIC hello
 
-RTIC, Real Time on Integrated Circuits, is a framework for building evented, time sensitive applications.
+RTIC, Real-Time Interrupt-driven Concurrency, is a framework for building evented, time sensitive applications.
 
 ✅ Open the `src/bin/rtic-hello.rs` file.
 
@@ -10,7 +10,7 @@ RTIC makes a clearer distinction between the application's initialization phase,
 
 `rtic::app` is a procedural macro that generates extra Rust code, in addition to the user's functions. The fully expanded version of the macro can be found in the file `target/rtic-expansion.rs`. This file will contain the expansion of the procedural macro for the last compiled RTIC application.
 
-✅ Build the `rtic-hello` example and look at the generated `rtic-expansion.rs` file. 
+✅ Build the `rtic-hello` example and look at the generated `rtic-expansion.rs` file.
 
 The generated code should look like this. Note that interrupts are disabled during the execution of the `init` function:
 
@@ -21,4 +21,4 @@ fn main() -> ! {
     rtic::export::interrupt::enable();
     idle(idle::Context::new(/* .. */))
 }
-```
+```