Rename Branch markdown filenames for improved slide titles

diff --git a/presentations/_posts/foundations/branch/0001-01-01-Development-Flexibility.md b/presentations/_posts/foundations/branch/0001-01-01-Flexibility.md
similarity index 100%
rename from presentations/_posts/foundations/branch/0001-01-01-Development-Flexibility.md
rename to presentations/_posts/foundations/branch/0001-01-01-Flexibility.md

diff --git a/presentations/_posts/foundations/branch/0001-01-01-List-All-Branches.md b/presentations/_posts/foundations/branch/0001-01-01-Listing.md
similarity index 100%
rename from presentations/_posts/foundations/branch/0001-01-01-List-All-Branches.md
rename to presentations/_posts/foundations/branch/0001-01-01-Listing.md

diff --git a/presentations/_posts/foundations/branch/0002-01-01-Create-a-Branch.md b/presentations/_posts/foundations/branch/0002-01-01-Creating.md
similarity index 100%
rename from presentations/_posts/foundations/branch/0002-01-01-Create-a-Branch.md
rename to presentations/_posts/foundations/branch/0002-01-01-Creating.md

diff --git a/presentations/_posts/foundations/branch/0003-01-01-Delete-a-Branch.md b/presentations/_posts/foundations/branch/0003-01-01-Deleting.md
similarity index 100%
rename from presentations/_posts/foundations/branch/0003-01-01-Delete-a-Branch.md
rename to presentations/_posts/foundations/branch/0003-01-01-Deleting.md

diff --git a/presentations/_posts/foundations/branch/0005-01-01-Move-a-Branch.md b/presentations/_posts/foundations/branch/0005-01-01-Renaming.md
similarity index 100%
rename from presentations/_posts/foundations/branch/0005-01-01-Move-a-Branch.md
rename to presentations/_posts/foundations/branch/0005-01-01-Renaming.md