Fix outdated instructions (#1000)

Author: SUPERCILEX

docs/defs.md

@@ -118,7 +118,7 @@ impl Greeter {
 ```python
 package(default_visibility = ["//visibility:public"])
 
-load("@rules_rust//rust:rust.bzl", "rust_library")
+load("@rules_rust//rust:defs.bzl", "rust_library")
 
 rust_library(
     name = "hello_lib",
@@ -138,7 +138,7 @@ fn main() {
 
 `hello_world/BUILD`:
 ```python
-load("@rules_rust//rust:rust.bzl", "rust_binary")
+load("@rules_rust//rust:defs.bzl", "rust_binary")
 
 rust_binary(
     name = "hello_world",
@@ -237,7 +237,7 @@ pub mod greeter;
 ```python
 package(default_visibility = ["//visibility:public"])
 
-load("@rules_rust//rust:rust.bzl", "rust_library")
+load("@rules_rust//rust:defs.bzl", "rust_library")
 
 rust_library(
     name = "hello_lib",

docs/flatten.md

@@ -288,7 +288,7 @@ impl Greeter {
 ```python
 package(default_visibility = ["//visibility:public"])
 
-load("@rules_rust//rust:rust.bzl", "rust_library")
+load("@rules_rust//rust:defs.bzl", "rust_library")
 
 rust_library(
     name = "hello_lib",
@@ -308,7 +308,7 @@ fn main() {
 
 `hello_world/BUILD`:
 ```python
-load("@rules_rust//rust:rust.bzl", "rust_binary")
+load("@rules_rust//rust:defs.bzl", "rust_binary")
 
 rust_binary(
     name = "hello_world",
@@ -483,7 +483,7 @@ Example:
   ```python
   package(default_visibility = ["//visibility:public"])
 
-  load("@rules_rust//rust:rust.bzl", "rust_library", "rust_doc")
+  load("@rules_rust//rust:defs.bzl", "rust_library", "rust_doc")
 
   rust_library(
       name = "hello_lib",
@@ -543,7 +543,7 @@ To run [documentation tests][doc-test] for the `hello_lib` crate, define a `rust
 ```python
 package(default_visibility = ["//visibility:public"])
 
-load("@rules_rust//rust:rust.bzl", "rust_library", "rust_doc_test")
+load("@rules_rust//rust:defs.bzl", "rust_library", "rust_doc_test")
 
 rust_library(
     name = "hello_lib",
@@ -664,7 +664,7 @@ pub mod greeter;
 ```python
 package(default_visibility = ["//visibility:public"])
 
-load("@rules_rust//rust:rust.bzl", "rust_library")
+load("@rules_rust//rust:defs.bzl", "rust_library")
 
 rust_library(
     name = "hello_lib",

docs/rust_doc.md

@@ -33,7 +33,7 @@ Example:
   ```python
   package(default_visibility = ["//visibility:public"])
 
-  load("@rules_rust//rust:rust.bzl", "rust_library", "rust_doc")
+  load("@rules_rust//rust:defs.bzl", "rust_library", "rust_doc")
 
   rust_library(
       name = "hello_lib",
@@ -93,7 +93,7 @@ To run [documentation tests][doc-test] for the `hello_lib` crate, define a `rust
 ```python
 package(default_visibility = ["//visibility:public"])
 
-load("@rules_rust//rust:rust.bzl", "rust_library", "rust_doc_test")
+load("@rules_rust//rust:defs.bzl", "rust_library", "rust_doc_test")
 
 rust_library(
     name = "hello_lib",

rust/private/rust.bzl

@@ -747,7 +747,7 @@ rust_library = rule(
         ```python
         package(default_visibility = ["//visibility:public"])
 
-        load("@rules_rust//rust:rust.bzl", "rust_library")
+        load("@rules_rust//rust:defs.bzl", "rust_library")
 
         rust_library(
             name = "hello_lib",
@@ -931,7 +931,7 @@ rust_binary = rule(
         ```python
         package(default_visibility = ["//visibility:public"])
 
-        load("@rules_rust//rust:rust.bzl", "rust_library")
+        load("@rules_rust//rust:defs.bzl", "rust_library")
 
         rust_library(
             name = "hello_lib",
@@ -951,7 +951,7 @@ rust_binary = rule(
 
         `hello_world/BUILD`:
         ```python
-        load("@rules_rust//rust:rust.bzl", "rust_binary")
+        load("@rules_rust//rust:defs.bzl", "rust_binary")
 
         rust_binary(
             name = "hello_world",

rust/private/rustdoc.bzl

@@ -39,7 +39,7 @@ Example:
   ```python
   package(default_visibility = ["//visibility:public"])
 
-  load("@rules_rust//rust:rust.bzl", "rust_library", "rust_doc")
+  load("@rules_rust//rust:defs.bzl", "rust_library", "rust_doc")
 
   rust_library(
       name = "hello_lib",

rust/private/rustdoc_test.bzl

@@ -240,7 +240,7 @@ target that depends on the `hello_lib` `rust_library` target:
 ```python
 package(default_visibility = ["//visibility:public"])
 
-load("@rules_rust//rust:rust.bzl", "rust_library", "rust_doc_test")
+load("@rules_rust//rust:defs.bzl", "rust_library", "rust_doc_test")
 
 rust_library(
     name = "hello_lib",

test/deps.bzl

@@ -5,7 +5,7 @@ load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
 load("//test/load_arbitrary_tool:load_arbitrary_tool_test.bzl", "load_arbitrary_tool_test")
 
 _LIBC_BUILD_FILE_CONTENT = """\
-load("@rules_rust//rust:rust.bzl", "rust_library")
+load("@rules_rust//rust:defs.bzl", "rust_library")
 
 rust_library(
     name = "libc",