Rename _animation.scss to _transitions.scss (#21370)

* Rename _animation.scss to _transitions.scss for accuracy

* fix docs reference to file name

* cleanup line breaks

3 files changed, 2 insertions, 4 deletions

diff --git a/docs/components/collapse.md b/docs/components/collapse.md
index 0ece9e453..3e465319e 100644
--- a/docs/components/collapse.md
+++ b/docs/components/collapse.md
@@ -104,7 +104,7 @@ The collapse plugin utilizes a few classes to handle the heavy lifting:
 - `.collapse.active` shows the content
 - `.collapsing` is added when the transition starts, and removed when it finishes
 
-These classes can be found in `_animation.scss`.
+These classes can be found in `_transitions.scss`.
 
 ### Via data attributes
 
diff --git a/scss/_animation.scss b/scss/_transitions.scss
index d8c6d1b75..21754df11 100644
--- a/scss/_animation.scss
+++ b/scss/_transitions.scss
@@ -1,6 +1,5 @@
 .fade {
   opacity: 0;
-
   @include transition($transition-fade);
 
   &.active {
@@ -31,6 +30,5 @@ tbody {
   position: relative;
   height: 0;
   overflow: hidden;
-
   @include transition($transition-collapse);
 }
diff --git a/scss/bootstrap.scss b/scss/bootstrap.scss
index afcfb3268..6c8da43a3 100644
--- a/scss/bootstrap.scss
+++ b/scss/bootstrap.scss
@@ -25,7 +25,7 @@
 @import "buttons";
 
 // Components
-@import "animation";
+@import "transitions";
 @import "dropdown";
 @import "button-group";
 @import "input-group";