fix(trie): correct comment in sparse_trie_reveal_node_1 test

[AJStonewee]

Fixed incorrect comment in sparse_trie_reveal_node_1 test: changed "hash builder has nodes 0x00 and 0x01" to "0x00 and 0x02" to match the actual code implementation which uses key1() and key3().

[AJStonewee]

// in line 3167：hash builder use key1 (0x00) and key3 (0x02)
[(key1(), value()), (key3(), value())]

// in line 3211：insert new node key2 (0x01)
sparse.update_leaf(key2(), value_encoded(), &provider).unwrap();

so in fact :
Hash builder：0x00 and 0x02
new and inserted node: 0x01