docs(typography): fix font family for quotation-02 style (#1055)

Author: janhassel

src/components/TypesetStyle/TypesetStyle.js

@@ -327,15 +327,15 @@ const typeScale = {
   'quotation-02': {
     sm: {
       step: 8,
-      font: 'IBM Plex Sans',
+      font: 'IBM Plex Serif',
       'font-weight': '300',
       'font-size': 2,
       'line-height': 2.5,
       'letter-spacing': '0',
     },
     md: {
       step: 9,
-      font: 'IBM Plex Sans',
+      font: 'IBM Plex Serif',
       'font-weight': '300',
       'font-size': 2.25,
       'line-height': 2.75,