use starlark lang for code snippts

Author: rickeylev

docs/howto/get-python-version.md

@@ -13,7 +13,7 @@ the version string.
 
 Create a file named `my_rule.bzl`:
 
-```text
+```starlark
 # my_rule.bzl
 def _my_rule_impl(ctx):
     toolchain = ctx.toolchains["@rules_python//python:toolchain_type"]
@@ -39,7 +39,7 @@ my_rule = rule(
 
 In your `BUILD.bazel` file, you can use the rule like this:
 
-```text
+```starlark
 # BUILD.bazel
 load(":my_rule.bzl", "my_rule")
 
@@ -51,7 +51,7 @@ my_rule(
 When you build this target, it will generate a file named
 `show_python_version.txt` containing the Python version (e.g., `3.9`).
 
-```text
+```starlark
 bazel build :show_python_version
 cat bazel-bin/show_python_version.txt
-```
+```

docs/howto/linking-libpython.md

@@ -20,7 +20,7 @@ other C/C++ rules via the `CcInfo` provider.
 
 Here's an example of a rule that creates the `-lpython<version>` flag:
 
-```text
+```starlark
 # python_libs.bzl
 load("@bazel_tools//tools/cpp:toolchain_utils.bzl", "cc_common")
 
@@ -47,7 +47,7 @@ python_libs = rule(
 In your `BUILD.bazel` file, define a target using this rule and add it to the
 `deps` of your `cc_binary` or `cc_library`.
 
-```text
+```starlark
 # BUILD.bazel
 load(":python_libs.bzl", "python_libs")
 
@@ -63,4 +63,4 @@ cc_binary(
         # Other dependencies
     ],
 )
-```
+```