fix(shared-docs): use latest versions material mixins for docs themining (#2042)

Use m2 prefixed versions

PR Close #2042

Author: josephperrott

docs/styles/global-styles.scss

@@ -48,15 +48,15 @@
 @include mq.for-tablet-landscape-down();
 
 // temporary just to show different options of code component UI.
-$primary: mat.define-palette(mat.$indigo-palette);
-$accent: mat.define-palette(mat.$pink-palette, A200, A100, A400);
-$theme: mat.define-light-theme(
+$primary: mat.m2-define-palette(mat.$m2-indigo-palette);
+$accent: mat.m2-define-palette(mat.$m2-pink-palette, A200, A100, A400);
+$theme: mat.m2-define-light-theme(
   (
     color: (
       primary: $primary,
       accent: $accent,
     ),
-    typography: mat.define-typography-config(),
+    typography: mat.m2-define-typography-config(),
   )
 );