css: fix minor table issue

public/css/gogs.css

@@ -2203,6 +2203,10 @@ footer .ui.language .menu {
   overflow-x: auto;
   overflow-y: hidden;
 }
+.repository .code-view table {
+  width: 100%;
+  border-spacing: 0;
+}
 .repository.quickstart .guide .item {
   padding: 1em;
 }

public/less/_repository.less

@@ -1143,6 +1143,11 @@
 		overflow: auto;
 		overflow-x: auto;
 		overflow-y: hidden;
+
+		table {
+			width: 100%;
+			border-spacing: 0;
+		}
 	}
 
 	&.quickstart {