add analysis pass article to ToC

Author: j2kun

README.md

@@ -16,6 +16,7 @@ This is the code repository for a series of articles on the
 9.  [Canonicalizers and Declarative Rewrite Patterns](https://jeremykun.com/2023/09/20/mlir-canonicalizers-and-declarative-rewrite-patterns/)
 10. [Dialect Conversion](https://jeremykun.com/2023/10/23/mlir-dialect-conversion/)
 11. [Lowering through LLVM](https://jeremykun.com/2023/11/01/mlir-lowering-through-llvm/)
+12. [A Global Optimization and Dataflow Analysis](https://jeremykun.com/2023/11/15/mlir-a-global-optimization-and-dataflow-analysis/)
 
 ## Bazel build