More small tweaks to the docs.

- Removed out-of-place one-liners that remained at the top of some of the
  pages.

- Fixed formatting of an "important" note in cmake_build.

- Add table of contents for consistency to the contributing page.

documentation/cmake_build.rst

@@ -30,8 +30,6 @@ Building with CMake
    :backlinks: none
 
 
-Information on how to build OpenSubdiv
-
 ----
 
 Overview
@@ -185,7 +183,7 @@ build that can be run in GitShell :
 
 .. container:: impnotip
 
-   * **Important**
+   **Important**
 
       Notice that the following scripts start by **recursively removing** the *../build/* and
       *../inst/* directories. Make sure you modify them to suit your build workflow.
@@ -259,7 +257,7 @@ CMake provides a cross-platform command-line build:
 
     cmake --build . --target install --config Release
 
-Alternatively, you can native toolkits to launch the build. The steps differ for each OS:
+Alternatively, you can use native toolkits to launch the build. The steps differ for each OS:
 
     * *Windows* :
         launch VC++ with the solution generated by cmake in your build directory.

documentation/contributing.rst

@@ -24,6 +24,11 @@
 Contributing to OpenSubdiv
 --------------------------
 
+.. contents::
+   :local:
+   :backlinks: none
+
+
 ----
 
 Contributor License Agreement

documentation/getting_started.rst

@@ -30,9 +30,6 @@ Getting Started
    :backlinks: none
 
 
-Getting started with Git and accessing the source code.
-
-
 Downloading the code
 ====================