SEED-0107: Update SEED references; fix typo

Change-Id: I9b70d66fb30bc0c5a03cb939dda64e8e86dfa7b0
Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/177698
Pigweed-Auto-Submit: Wyatt Hepler <hepler@google.com>
Reviewed-by: Ted Pudlik <tpudlik@google.com>
Presubmit-Verified: CQ Bot Account <pigweed-scoped@luci-project-accounts.iam.gserviceaccount.com>
Commit-Queue: Auto-Submit <auto-submit@pigweed-service-accounts.iam.gserviceaccount.com>
diff --git a/seed/0107-communications.rst b/seed/0107-communications.rst
index a79a130..98f38e5 100644
--- a/seed/0107-communications.rst
+++ b/seed/0107-communications.rst
@@ -277,9 +277,10 @@
 need to know how data is sent and received. The same API can be used to exchange
 data with another process on the same machine or with a device across the world.
 
-.. admonition:: Sockets SEED
+.. admonition:: Sockets SEEDs
 
-   The Pigweed sockets API will be explored in an upcoming SEED.
+   The Pigweed sockets API is described in SEED-0116. The sockets API is based
+   on ``pw_channel``, which is proposed in SEED-0114.
 
 Socket types
 ------------
@@ -333,7 +334,7 @@
 A future revision of ``pw_rpc`` will use the sockets API in place of its current
 ``Channel`` API.
 
-The sockets API will support both synchronous and :ref:`asynchonous
+The sockets API will support both synchronous and :ref:`asynchronous
 <seed-0107-async>` use. The synchronous API may be built using the async API.
 It will also support :ref:`zero-copy <seed-0107-buffers>` data transmission.
 
@@ -536,7 +537,7 @@
 
 .. admonition:: Async SEED
 
-   Pigweed's async pattern will be explored in an upcoming SEED.
+   Pigweed's async pattern is proposed in :ref:`SEED-0112 <seed-0112>`.
 
 .. _seed-0107-buffers:
 
@@ -576,7 +577,8 @@
 
 .. admonition:: Buffer management SEED
 
-   Pigweed's buffer management system will be explored in an upcoming SEED.
+   Pigweed's buffer management system is proposed in :ref:`SEED-0109
+   <seed-0109>`.
 
 Vectored I/O
 ------------
@@ -604,9 +606,9 @@
 * Write SEEDs to explore existing solutions, distill requirements, and propose
   new Pigweed features for these areas:
 
-  - Sockets API
-  - Async pattern
-  - Buffer management
+  - Sockets API (SEED-0116)
+  - Async pattern (:ref:`SEED-0112 <seed-0112>`).
+  - Buffer management (:ref:`SEED-0109 <seed-0109>`)
   - Network protocol stack
 
 * Implement the Sockets API.