Fix typo

src/cluster.c

@@ -650,7 +650,7 @@ unsigned int keyHashSlot(char *key, int keylen) {
     for (e = s+1; e < keylen; e++)
         if (key[e] == '}') break;
 
-    /* No '}' or nothing betweeen {} ? Hash the whole key. */
+    /* No '}' or nothing between {} ? Hash the whole key. */
     if (e == keylen || e == s+1) return crc16(key,keylen) & 0x3FFF;
 
     /* If we are here there is both a { and a } on its right. Hash