docs: use monospace for fallback font of PT Mono (#4495)

rinsuki · merceyz · commit 8678eb8d6962 · 2022-09-21T21:04:39.000+02:00
some styles are using monospace for fallback, but some styles are missing fallback.
diff --git a/packages/gatsby/src/components/markdown.js b/packages/gatsby/src/components/markdown.js
@@ -162,7 +162,7 @@ const Content = styled.div`
 
     color: #007aa2;
 
-    font-family: "PT Mono";
+    font-family: "PT Mono", monospace;
   }
 
   pre code {
diff --git a/packages/gatsby/src/components/navigation.js b/packages/gatsby/src/components/navigation.js
@@ -87,7 +87,7 @@ const MenuEntry = styled(Link)`
 const Tag = styled.code`
   color: #007aa2;
 
-  font-family: "PT Mono";
+  font-family: "PT Mono", monospace;
 
   ${ifDesktop} {
     margin-left: auto;

Original file line number	Diff line number	Diff line change
@@ -162,7 +162,7 @@ const Content = styled.div`
`162`	`162`
`163`	`163`	`color: #007aa2;`
`164`	`164`
`165`		`- font-family: "PT Mono";`
	`165`	`+ font-family: "PT Mono", monospace;`
`166`	`166`	`}`
`167`	`167`
`168`	`168`	`pre code {`