Fix sed command for amdgpu_backend in workspace.bzl

Author: wsmoses

workspace.bzl

@@ -19,7 +19,7 @@ XLA_PATCHES = [
 	sed -i.bak0 "/amdgpu_backend/d" xla/backends/gpu/codegen/triton/BUILD
     """,
     """
-    	sed -i.bak0 "s/\\\"\\/\\/xla\\/service\\/gpu\\/llvm_gpu_backend:nvptx_backend\\\"/\\0]) + if_rocm_is_configured([\\\"\\/\\/xla\\/service\\/gpu\\/llvm_gpu_backend:amdgpu_backend\\\"/g" xla/backends/gpu/codegen/triton/BUILD
+    sed -i.bak0 "s/\\\"\\/\\/xla\\/service\\/gpu\\/llvm_gpu_backend:nvptx_backend\\\"/\\0]) + if_rocm_is_configured([\\\"\\/\\/xla\\/service\\/gpu\\/llvm_gpu_backend:amdgpu_backend\\\"/g" xla/backends/gpu/codegen/triton/BUILD
     """,
     """
     sed -i.bak0 "s/load(\\\"\\/\\/xla\\/tsl:tsl.bzl\\\", \\\"if_google\\\")/\\0\\nload(\\\"@local_config_rocm\\/\\/rocm:build_defs.bzl\\\", \\\"if_rocm_is_configured\\\")/g" xla/backends/gpu/codegen/triton/BUILD