Improve paddings for code blocks line numbers

Author: GuillaumeGomez

src/librustdoc/html/static/css/rustdoc.css

@@ -831,10 +831,14 @@ both the code example and the line numbers, so we need to remove the radius in t
 	-webkit-user-select: none;
 	user-select: none;
 	padding: 14px 8px;
+	padding-right: 2px;
 	color: var(--src-line-numbers-span-color);
 }
 
-.rustdoc .scraped-example .src-line-numbers {
+.rustdoc .scraped-example .example-wrap .src-line-numbers {
+	padding: 0;
+}
+.rustdoc .src-line-numbers pre {
 	padding: 14px 0;
 }
 .src-line-numbers a, .src-line-numbers span {
@@ -893,7 +897,7 @@ both the code example and the line numbers, so we need to remove the radius in t
 }
 
 .docblock code, .docblock-short code,
-pre, .rustdoc.src .example-wrap {
+pre, .rustdoc.src .example-wrap, .example-wrap .src-line-numbers {
 	background-color: var(--code-block-background-color);
 }