[llvm] [mlir] [llvm][mlir][NFC] Fix typos in comments and test descriptions (PR #139688)

[James Henderson via llvm-commits]

================
@@ -17,7 +17,7 @@ RUN: touch -m -t 200001010000 %t/tmp.older/evenlen || sleep 2.1
 RUN: echo newer > %t/tmp.newer/evenlen
 RUN: touch %t/tmp.newer/evenlen
 
-Create an achive with the newest file
+Create an achieve with the newest file
----------------
jh7370 wrote:

This should be "archive" not "achieve".

https://github.com/llvm/llvm-project/pull/139688