docs: Update homepage to use latest version (#1441)

v0.2.0 does not have `rust_bindgen_dependencies`
diff --git a/docs/index.md b/docs/index.md
index 41a67e3..b84d758 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -22,10 +22,10 @@
 # https://github.com/bazelbuild/rules_rust/releases
 http_archive(
     name = "rules_rust",
-    sha256 = "39655ab175e3c6b979f362f55f58085528f1647957b0e9b3a07f81d8a9c3ea0a",
+    sha256 = "7fb9b4fe1a6fb4341bdf7c623e619460ecc0f52d5061cc56abc750111fba8a87",
     urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/rules_rust/releases/download/0.2.0/rules_rust-v0.2.0.tar.gz",
-        "https://github.com/bazelbuild/rules_rust/releases/download/0.2.0/rules_rust-v0.2.0.tar.gz",
+        "https://mirror.bazel.build/github.com/bazelbuild/rules_rust/releases/download/0.7.0/rules_rust-v0.7.0.tar.gz",
+        "https://github.com/bazelbuild/rules_rust/releases/download/0.7.0/rules_rust-v0.7.0.tar.gz",
     ],
 )