Update RSPEC

rules/S1116/rust/metadata.json

@@ -1,2 +1,6 @@
 {
-}
+  "tags": [
+    "unused",
+    "clippy"
+  ]
+}

rules/S1116/rust/rule.adoc

@@ -1,44 +1,49 @@
-FIXME: add a description
-
-// If you want to factorize the description uncomment the following line and create the file.
-//include::../description.adoc[]
-
 == Why is this an issue?
 
-FIXME: remove the unused optional headers (that are commented out)
-
-//=== What is the potential impact?
-
-== How to fix it
-//== How to fix it in FRAMEWORK NAME
+include::../description.adoc[]
 
 === Code examples
 
 ==== Noncompliant code example
 
 [source,rust,diff-id=1,diff-type=noncompliant]
 ----
-FIXME
+fn main() {
+    let x = 5;
+
+    if x > 0 {
+        println!("x is positive");
+    }; // Noncompliant
+
+    match x {
+        1 => println!("x is one"),
+        2 => println!("x is two"),
+        _ => println!("x is something else"),
+    }; // Noncompliant
+}
 ----
 
 ==== Compliant solution
 
 [source,rust,diff-id=1,diff-type=compliant]
 ----
-FIXME
+fn main() {
+    let x = 5;
+
+    if x > 0 {
+        println!("x is positive");
+    }
+
+    match x {
+        1 => println!("x is one"),
+        2 => println!("x is two"),
+        _ => println!("x is something else"),
+    }
+}
 ----
 
-//=== How does this work?
-
-//=== Pitfalls
-
-//=== Going the extra mile
+== Resources
 
+=== Documentation
 
-//== Resources
-//=== Documentation
-//=== Articles & blog posts
-//=== Conference presentations
-//=== Standards
-//=== External coding guidelines
-//=== Benchmarks
+* Clippy Lints - https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_semicolon