Correct renaming of functions

Signed-off-by: Valentin Popov <info@valentineus.link>

_scss/components/theme/_buttons.scss

@@ -21,7 +21,7 @@ input[type='submit'] {
   text-transform: uppercase;
   white-space: nowrap;
 
-  @include borderradius(.4rem);
+  @include border-radius(.4rem);
 
   &:focus,
   &:hover {

_scss/components/theme/_code.scss

@@ -7,7 +7,7 @@ code {
   padding: .2rem .5rem;
   white-space: nowrap;
 
-  @include borderradius(.4rem);
+  @include border-radius(.4rem);
 }
 
 pre {
@@ -20,6 +20,6 @@ pre {
     padding: 1rem 1.5rem;
     white-space: pre;
 
-    @include borderradius(0);
+    @include border-radius(0);
   }
 }

_scss/components/theme/_form.scss

@@ -26,9 +26,9 @@ textarea {
   width: 100%;
 
   @include appearance(none);
-  @include borderradius(.4rem);
-  @include boxshadow(none);
-  @include boxsizing(inherit);
+  @include border-radius(.4rem);
+  @include box-shadow(none);
+  @include box-sizing(inherit);
 
   &:focus {
     border-color: $color-primary;

_scss/utilities/_borderradius.scss

@@ -6,7 +6,7 @@
 // Default: 0
 //
 // https://www.w3.org/TR/css-backgrounds-3/#propdef-border-radius
-@mixin borderradius($value: 0) {
+@mixin border-radius($value: 0) {
   -webkit-border-radius: $value;
      -moz-border-radius: $value;
           border-radius: $value;

_scss/utilities/_boxshadow.scss

@@ -6,7 +6,7 @@
 // Default: none
 //
 // https://www.w3.org/TR/css-backgrounds-3/#propdef-box-shadow
-@mixin boxshadow($value: none) {
+@mixin box-shadow($value: none) {
   -webkit-box-shadow: $value;
      -moz-box-shadow: $value;
           box-shadow: $value;

_scss/utilities/_boxsizing.scss

@@ -7,7 +7,7 @@
 // Default: content-box
 //
 // https://www.w3.org/TR/css-ui-3/#box-sizing
-@mixin boxsizing($value: content-box) {
+@mixin box-sizing($value: content-box) {
   -webkit-box-sizing: $value;
      -moz-box-sizing: $value;
       -ms-box-sizing: $value;