clarify a bit.

llvm-svn: 275364
diff --git a/llvm/docs/DeveloperPolicy.rst b/llvm/docs/DeveloperPolicy.rst
index 8592598..23bdb2f 100644
--- a/llvm/docs/DeveloperPolicy.rst
+++ b/llvm/docs/DeveloperPolicy.rst
@@ -351,7 +351,7 @@
    comes with apache) in *crypt* mode (often enabled with "``-d``"), or find a web
    page that will do it for you.  Note that our system does not work with MD5
    hashes.  These are significantly longer than a crypt hash - e.g.
-   "``$apr1$vea6bBV2$Z8IFx.AfeD8LhqlZFqJer0``".
+   "``$apr1$vea6bBV2$Z8IFx.AfeD8LhqlZFqJer0``", we only accept the shorter crypt hash.
 
 Once you've been granted commit access, you should be able to check out an LLVM
 tree with an SVN URL of "https://username@llvm.org/..." instead of the normal