docs: Fix code-block indentation

Change-Id: If2192d5ca9e3e8d271ff649bd0832a67327dfe40
Original-Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/197533
Original-Reviewed-by: Kayce Basques <kayce@google.com>
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/llvm-integration/+/235142
Commit-Queue: Prabhu Karthikeyan Rajasekaran <prabhukr@google.com>
Reviewed-by: Rob Mohr <mohrr@google.com>
Reviewed-by: Keir Mierle <keir@google.com>
Lint: Lint 🤖 <android-build-ayeaye@system.gserviceaccount.com>
diff --git a/third_party/llvm_builtins/docs.rst b/third_party/llvm_builtins/docs.rst
index 73054f4..3336d53 100644
--- a/third_party/llvm_builtins/docs.rst
+++ b/third_party/llvm_builtins/docs.rst
@@ -18,9 +18,9 @@
 
 .. code-block:: sh
 
-  git submodule add git submodule add \
-    https://llvm.googlesource.com/llvm-project/compiler-rt \
-    third_party/llvm_builtins
+   git submodule add git submodule add \
+     https://llvm.googlesource.com/llvm-project/compiler-rt \
+     third_party/llvm_builtins
 
 .. admonition:: Note
 
diff --git a/third_party/llvm_libc/docs.rst b/third_party/llvm_libc/docs.rst
index 4939600..38a9682 100644
--- a/third_party/llvm_libc/docs.rst
+++ b/third_party/llvm_libc/docs.rst
@@ -17,8 +17,8 @@
 
 .. code-block:: sh
 
-  git submodule add https://llvm.googlesource.com/llvm-project/libc \
-    third_party/llvm_libc/src
+   git submodule add https://llvm.googlesource.com/llvm-project/libc \
+     third_party/llvm_libc/src
 
 Note, this git repository is maintained by Google and is a slice of upstream
 LLVM including only the libc subdirectory.