fix: word break (#198)

Co-authored-by: Juntao Zhang <zhangjuntao@apache.org>
diff --git a/themes/docsy/assets/scss/_content.scss b/themes/docsy/assets/scss/_content.scss
index cd516c7..b1928c6 100644
--- a/themes/docsy/assets/scss/_content.scss
+++ b/themes/docsy/assets/scss/_content.scss
@@ -9,6 +9,10 @@
         font-weight: $font-weight-body-text;
     }
 
+    a{
+        word-break: break-word;
+    }
+
     > h1 {
         font-weight: $font-weight-bold;
         margin-bottom: 1rem;