docs: avoid locale-specific specification anchors

Author: chaokunyang

docs/object-serialization/xlang/polymorphism.md

@@ -26,8 +26,8 @@ field schema.
 ## Runtime rules
 
 Use the selected runtime's schema metadata, registration, and polymorphism pages for exact syntax.
-The [xlang serialization specification](../../specification/xlang_serialization_spec.md#polymorphisms)
-defines the shared behavior and limitations.
+The [xlang serialization specification](../../specification/xlang_serialization_spec.md) defines
+the shared behavior and limitations.
 
 Do not infer xlang support from host-language inheritance alone. A concrete subtype must have a
 portable xlang mapping and coordinated registration on every peer that can receive it.

docs/row-format/compact.md

@@ -47,5 +47,4 @@ Reuse the encoder within one thread. Create separate encoders for concurrent thr
 Choose Compact Row only when every reader is Java and the space reduction justifies using an
 unstable format. Use [Standard Row](standard.md) for Java/Python/C++/Rust interchange.
 
-See the [Row Format specification](../specification/row_format_spec.md#compact-row-format-java-only)
-for the exact binary layout.
+See the [Row Format specification](../specification/row_format_spec.md) for the exact binary layout.