YETUS-863 Fixed quote characters in the RC verification document (#87)

Signed-off-by: Sean Busbey <busbey@apache.org>
diff --git a/asf-site-src/source/contribute/releases.html.md b/asf-site-src/source/contribute/releases.html.md
index fe84f41..a8e8d36 100644
--- a/asf-site-src/source/contribute/releases.html.md
+++ b/asf-site-src/source/contribute/releases.html.md
@@ -358,7 +358,7 @@
    ```bash
    $ mkdir apache-yetus-0.7.0-src_unpack
    $ tar -C apache-yetus-0.7.0-src_unpack -xzf apache-yetus-0.7.0-src.tar.gz
-   $ git clone --single-branch --depth=1 --branch YETUS-585 `https://github.com/apache/yetus.git` apache-yetus-0.7.0-RC1-tag
+   $ git clone --single-branch --depth=1 --branch YETUS-585 'https://github.com/apache/yetus.git' apache-yetus-0.7.0-RC1-tag
    $ diff -r apache-yetus-0.7.0-RC1-tag apache-yetus-0.7.0-src_unpack/yetus-project-0.7.0
    $ echo $?
    0