Fix broken table formatting.

In particular, ensure that the table separators have the correct syntax.
At least three hyphens in each column are required for the row to be recognized
as a separator.

PiperOrigin-RevId: 372152967
diff --git a/bindings/tflite/README.md b/bindings/tflite/README.md
index ee3e4f1..6875a55 100644
--- a/bindings/tflite/README.md
+++ b/bindings/tflite/README.md
@@ -68,7 +68,7 @@
 ## Support
 
 |   | Glossary
-| - | --------
+| --- | --------
 | ✔️ | Supported and expected to match tflite semantics
 | ⚠️ | Supported with compatibility caveats (avoid if possible)
 | 🐢 | Supported with performance caveats (prefer the IREE C API)
@@ -87,7 +87,7 @@
 structures like `TfLiteTensor` and `TfLiteContext` are undefined.
 
 |   | TFLite API |  Notes |
-| - | -------- | ----- |
+| --- | -------- | ----- |
 | ✔️ | `TfLiteVersion` | returns an IREE version string
 |  |  |
 | 🔒 | `TfLiteModel struct` | _implementation detail_
@@ -133,7 +133,7 @@
 ### Features
 
 |   | TFLite Feature |  Notes |
-| - | -------- | ----- |
+| --- | -------- | ----- |
 | 🔒 | Sparsity | **API not public**; likely possible
 | 🔒 | Complex Numbers | **API not public**; likely possible
 | 🔒 | External Contexts | **API not public**; support possible but API inadequate for performance sensitive applications