[bazel] Fix some inaccuracies in bazel readme. NFC (#1434)
Edit some version variables to make correct installation and text under.
diff --git a/bazel/README.md b/bazel/README.md
index 8a4eda1..d650441 100644
--- a/bazel/README.md
+++ b/bazel/README.md
@@ -16,15 +16,15 @@
emsdk_deps()
load("@emsdk//:emscripten_deps.bzl", emsdk_emscripten_deps = "emscripten_deps")
-emsdk_emscripten_deps(emscripten_version = "2.0.31")
+emsdk_emscripten_deps(emscripten_version = "3.1.64")
load("@emsdk//:toolchains.bzl", "register_emscripten_toolchains")
register_emscripten_toolchains()
```
-The SHA1 hash in the above `strip_prefix` and `url` parameters correspond to the git revision of
-[emsdk 2.0.31](https://github.com/emscripten-core/emsdk/releases/tag/2.0.31). To get access to
+The `tag` and `emscripten_version` parameters correspond to the git revision of
+[emsdk 3.1.64](https://github.com/emscripten-core/emsdk/releases/tag/3.1.64). To get access to
newer versions, you'll need to update those. To make use of older versions, change the
-parameter of `emsdk_emscripten_deps()`. Supported versions are listed in `revisions.bzl`
+parameter of `git_repository` and `emsdk_emscripten_deps()`. Supported versions are listed in `revisions.bzl`
Bazel 7+ additionally requires `platforms` dependencies in the `MODULE.bazel` file.
```starlark
