Change md file names to all caps for consistency

Author: marthacryan

.github/pull_request_template.md

@@ -27,7 +27,7 @@ below :-).
 
 ## Code PR
 
-- [ ] I have read through the [contributing notes](https://github.com/plotly/plotly.py/blob/master/contributing.md) and understand the structure of the package. In particular, if my PR modifies code of `plotly.graph_objects`, my modifications concern the `codegen` files and not generated files.
+- [ ] I have read through the [contributing notes](https://github.com/plotly/plotly.py/blob/master/CONTRIBUTING.md) and understand the structure of the package. In particular, if my PR modifies code of `plotly.graph_objects`, my modifications concern the `codegen` files and not generated files.
 - [ ] I have added tests (if submitting a new feature or correcting a bug) or
   modified existing tests.
 - [ ] For a new feature, I have added documentation examples in an existing or

CHANGELOG.md

@@ -716,7 +716,7 @@ This version includes several performance improvements ([#2368](https://github.c
     - Introduce range breaks on date axes (for example, to remove week-ends) via `layout.xaxis.rangebreaks`
     - Introduce a new unified x (or y) hovermode (`layout.hovermode="x unified"`), in which the hover box shows the information for all traces at a given x (or y) position
     - Add `node.customdata` and `link.customdata` to sankey traces
-- Updated [contributing notes](https://github.com/plotly/plotly.py/blob/master/contributing.md) for more explanations on how to contribute to plotly.py [#2290](https://github.com/plotly/plotly.py/pull/2290). Please give feedback on these notes!
+- Updated [contributing notes](https://github.com/plotly/plotly.py/blob/master/CONTRIBUTING.md) for more explanations on how to contribute to plotly.py [#2290](https://github.com/plotly/plotly.py/pull/2290). Please give feedback on these notes!
 - Updated documentation examples [#2325](https://github.com/plotly/plotly.py/pull/2325), and to show how to color links in Sankey diagrams [#2291](https://github.com/plotly/plotly.py/pull/2291).
 - Special thanks to [@SylwiaOliwia2](https://github.com/SylwiaOliwia2) and [@dangercrow](https://github.com/dangercrow) for improving our documentation!
 
@@ -1738,7 +1738,7 @@ This is a major version with many exciting updates. See the [Introducing plotly.
 - Error message for `plotly.figure_factory.create_choropleth` is now helpful to Anaconda users who do not have the correct modules installed for the County Choropleth figure factory.
 
 ### Changed / Deprecated
-Please see the [migration guid](migration-guide.md) for a full list of the changes and deprecations in version 3.0.0
+Please see the [migration guide](MIGRATION_GUIDE.md) for a full list of the changes and deprecations in version 3.0.0
 
 
 

contributing.md renamed to CONTRIBUTING.md

@@ -67,7 +67,7 @@ Built on top of [plotly.js](https://github.com/plotly/plotly.js), `plotly.py` is
 ---
 
 - [Online Documentation](https://plotly.com/python/)
-- [Contributing to plotly](https://github.com/plotly/plotly.py/blob/master/contributing.md)
+- [Contributing to plotly](https://github.com/plotly/plotly.py/blob/master/CONTRIBUTING.md)
 - [Changelog](https://github.com/plotly/plotly.py/blob/master/CHANGELOG.md)
 - [Code of Conduct](https://github.com/plotly/plotly.py/blob/master/CODE_OF_CONDUCT.md)
 - [Community forum](https://community.plotly.com)

migration-guide.md renamed to MIGRATION_GUIDE.md

@@ -25,10 +25,10 @@ where you can edit the page on Github).
 
 For more important edits where you need to run the notebook to check the output,
 clone the repository and setup an environment as described in the [main
-contributing notes](../contributing.md). If you're writing documentation at the
+contributing notes](../CONTRIBUTING.md). If you're writing documentation at the
 same time as you are developing a feature, make sure to install with editable
 install (`pip install -e`, as described in [main
-contributing notes](../contributing.md)), so that you only need to restart
+contributing notes](../CONTRIBUTING.md)), so that you only need to restart
 the Jupyter kernel when you have changed the source code of the feature.
 
 ### Branches

README.md

@@ -161,7 +161,7 @@ $ git push origin add-ff-type
 
 ## Be Part of the Discussion
 
-Go check out your newly pushed branch at https://github.com/plotly/plotly.py. If you have any other questions, check out the [Plotly Contributing Page](https://github.com/plotly/plotly.py/blob/master/contributing.md). Thanks for contributing to Plotly's Graphing Library!
+Go check out your newly pushed branch at https://github.com/plotly/plotly.py. If you have any other questions, check out the [Plotly Contributing Page](https://github.com/plotly/plotly.py/blob/master/CONTRIBUTING.md). Thanks for contributing to Plotly's Graphing Library!
 
 ### Table of Current Figure Factories
 | Name              | Documentation                             | In GitHub     |