doc: development-process: rename files to rst

Now that the documents were converted, rename them to .rst, as
this is needed by the Sphinx build logic.

Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

diff --git a/Documentation/development-process/1.Intro b/Documentation/development-process/1.Intro.rst
similarity index 100%
rename from Documentation/development-process/1.Intro
rename to Documentation/development-process/1.Intro.rst

diff --git a/Documentation/development-process/2.Process b/Documentation/development-process/2.Process.rst
similarity index 100%
rename from Documentation/development-process/2.Process
rename to Documentation/development-process/2.Process.rst

diff --git a/Documentation/development-process/3.Early-stage b/Documentation/development-process/3.Early-stage.rst
similarity index 100%
rename from Documentation/development-process/3.Early-stage
rename to Documentation/development-process/3.Early-stage.rst

diff --git a/Documentation/development-process/4.Coding b/Documentation/development-process/4.Coding.rst
similarity index 100%
rename from Documentation/development-process/4.Coding
rename to Documentation/development-process/4.Coding.rst

diff --git a/Documentation/development-process/5.Posting b/Documentation/development-process/5.Posting.rst
similarity index 100%
rename from Documentation/development-process/5.Posting
rename to Documentation/development-process/5.Posting.rst

diff --git a/Documentation/development-process/6.Followthrough b/Documentation/development-process/6.Followthrough.rst
similarity index 100%
rename from Documentation/development-process/6.Followthrough
rename to Documentation/development-process/6.Followthrough.rst

diff --git a/Documentation/development-process/7.AdvancedTopics b/Documentation/development-process/7.AdvancedTopics.rst
similarity index 100%
rename from Documentation/development-process/7.AdvancedTopics
rename to Documentation/development-process/7.AdvancedTopics.rst

diff --git a/Documentation/development-process/8.Conclusion b/Documentation/development-process/8.Conclusion.rst
similarity index 100%
rename from Documentation/development-process/8.Conclusion
rename to Documentation/development-process/8.Conclusion.rst