Fixed spelling mistake

src/rocksdb.rs

@@ -434,7 +434,7 @@ impl DB {
         self.write_opt(batch, &WriteOptions::default())
     }
 
-    pub fn write_withou_wal(&self, batch: WriteBatch) -> Result<(), String> {
+    pub fn write_without_wal(&self, batch: WriteBatch) -> Result<(), String> {
         let mut wo = WriteOptions::new();
         wo.disable_wal(true);
         self.write_opt(batch, &wo)