DOC: fix typo "ant" for "and" in INSTALL

Tomas Zubiri reported this typo in the doc that apparently exists in
2.5 as well.
diff --git a/INSTALL b/INSTALL
index 35b0242..696cc0f 100644
--- a/INSTALL
+++ b/INSTALL
@@ -224,7 +224,7 @@
 4.5) Cryptography
 -----------------
 For SSL/TLS, it is necessary to use a cryptography library. HAProxy currently
-supports the OpenSSL library, and is known to build ant work with branches
+supports the OpenSSL library, and is known to build and work with branches
 0.9.8, 1.0.0, 1.0.1, 1.0.2, 1.1.0 and 1.1.1. OpenSSL follows a long-term
 support cycle similar to HAProxy's, and each of the branches above receives its
 own fixes, without forcing you to upgrade to another branch. There is no excuse