Modify rule S3878: Add collection expression and collection params to the description

rules/S3878/csharp/rule.adoc

@@ -1,37 +1,61 @@
 == Why is this an issue?
 
-There's no point in creating an array solely for the purpose of passing it to a `params` parameter. Simply pass the elements directly. They will be consolidated into an array automatically.
+Creating an array or using a collection expression solely for the purpose of passing it to a `params` parameter is unnecessary. Simply pass the elements directly, and they will be automatically consolidated into the appropriate collection type.
 
-=== Noncompliant code example
+== How to fix it
 
-[source,csharp]
+=== Code examples
+
+==== Noncompliant code example
+
+[source,csharp,diff-id=1,diff-type=noncompliant]
 ----
 public void Base() 
 {
-    Method(new string[] { "s1", "s2" }); // Noncompliant: unnecessary
-    Method(new string[] { });            // Noncompliant
-    Method(new string[12]);              // Compliant
+    Method(new string[] { "s1", "s2" }); // Noncompliant: resolves to string[] overload
+    Method(new string[] { });            // Noncompliant: resolves to string[] overload
+    Method(["s3", "s4"]);                // Noncompliant: resolves to ReadOnlySpan overload
+    Method(new string[12]);              // Compliant: resolves to string[] overload 
 }
 
 public void Method(params string[] args)
 {
     // ...
 }
+
+public void Method(params ReadOnlySpan<string> args) // C# 13 params collections
+{
+    // C# 13 params collection
+}
 ----
 
-=== Compliant solution
+==== Compliant solution
 
-[source,csharp]
+[source,csharp,diff-id=1,diff-type=compliant]
 ----
 public void Base()
 {
-    Method("s1", "s2");
-    Method();
-    Method(new string[12]);
+    Method("s1", "s2");     // resolves to ReadOnlySpan overload
+    Method();               // resolves to ReadOnlySpan overload
+    Method("s3", "s4");     // resolves to ReadOnlySpan overload
+    Method(new string[12]); // resolves to string[]  overload
 }
 
 public void Method(params string[] args)
 {
-    // ...
+    // ..
+}
+
+public void Method(params ReadOnlySpan<string> args) // C# 13 params collections
+{
+    // ..
 }
 ----
+
+== Resources
+
+=== Documentation
+
+* Microsoft Learn - https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/method-parameters#params-modifier[`params` modifier]
+* Microsoft Learn - C# 13 https://learn.microsoft.com/en-us/dotnet/csharp/whats-new/csharp-13#params-collections[`params` collections]
+* Microsoft Learn - https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/operators/collection-expressions[Collection expressions]