enhance(notecards,callouts): reduce borders (#10943)

* enhance(notecards): remove border

* enhance(notecards): reduce left border width

* enhance(callouts): remove border

Author: caugner

Diff for: client/src/document/index.scss

@@ -544,7 +544,6 @@ pre {
 
 .callout {
   background: var(--background-secondary);
-  border: 1px solid var(--border-primary);
   border-radius: var(--elem-radius);
   box-shadow: var(--shadow-01);
   display: flex;

Diff for: client/src/ui/molecules/notecards/index.scss

@@ -2,8 +2,7 @@
   --note-background: var(--background-information);
   --note-theme: var(--icon-information);
   background-color: var(--note-background);
-  border: 1px solid var(--border-secondary);
-  border-left: 4px solid var(--note-theme);
+  border-left: 2px solid var(--note-theme);
   border-radius: var(--elem-radius);
   box-shadow: var(--shadow-01);
   margin: 1rem 0;