Update Op description

Author: AmrDeveloper

clang/include/clang/CIR/Dialect/IR/CIROps.td

@@ -5139,9 +5139,10 @@ def CIR_TryOp : CIR_Op<"try",[
 //===----------------------------------------------------------------------===//
 
 def CIR_CatchParamOp : CIR_Op<"catch_param", [HasParent<"cir::TryOp">]> {
-  let summary = "Represents catch clause formal parameter";
+  let summary = "Represents the catch clause formal parameter";
   let description = [{
-    The `cir.catch_param` operate in the catch regions of `cir.try`.
+    The `cir.catch_param` used to retrieves the exception object inside
+    the handler regions of `cir.try`.
 
     This operation is used only before the CFG flatterning pass.