Buildifier fixes for generated files (#77)

Author: thii

mylang/repositories.bzl

@@ -48,9 +48,12 @@ def _mylang_repo_impl(repository_ctx):
         url = url,
         integrity = TOOL_VERSIONS[repository_ctx.attr.mylang_version][repository_ctx.attr.platform],
     )
-    build_content = """#Generated by mylang/repositories.bzl
+    build_content = """# Generated by mylang/repositories.bzl
 load("@com_myorg_rules_mylang//mylang:toolchain.bzl", "mylang_toolchain")
-mylang_toolchain(name = "mylang_toolchain", target_tool = select({
+
+mylang_toolchain(
+    name = "mylang_toolchain",
+    target_tool = select({
         "@bazel_tools//src/conditions:host_windows": "mylang_tool.exe",
         "//conditions:default": "mylang_tool",
     }),