Merge pull request #339 from google/build-space-doc-update

Update documentation on build space from sp to bd

docs/contents/libraries.rst

diff --git a/docs/contents/libraries.rst b/docs/contents/libraries.rst
index ca3c24e..b7b29de 100644
--- a/docs/contents/libraries.rst
+++ b/docs/contents/libraries.rst
@@ -34,7 +34,7 @@
   +--------------------------------+---------------------------------------+
   | Digital Standard Cells         | :lib_type:`sc`                        |
   +--------------------------------+---------------------------------------+
-  | Build Space (Flash, SRAM, etc) | :lib_type:`sp`                        |
+  | Build Space (Flash, SRAM, etc) | :lib_type:`bd`                        |
   +--------------------------------+---------------------------------------+
   | IO and Periphery               | :lib_type:`io`                        |
   +--------------------------------+---------------------------------------+