Update README for 2022

README.md

@@ -1,5 +1,5 @@
-This is my attempt to solve the [Advent Of Code 2021](https://adventofcode.com/2021)
-puzzles using [PostgreSQL 14](https://www.postgresql.org/). I don't plan to use
+This is my attempt to solve the [Advent Of Code 2022](https://adventofcode.com/2022)
+puzzles using [PostgreSQL 15](https://www.postgresql.org/). I don't plan to use
 any extensions except for what comes in contrib. I'm also going to try to avoid
 using plpgsql (and certainly any other pl).
 
@@ -9,7 +9,7 @@ language.
 **Comments and improvements welcome.**
 
 If you would like to run these yourself, save your data in the appropriate `.input`
-file, then run `psql -Xqf 2021/decXX.sql`.
+file, then run `psql -Xqf 2022/decXX.sql`.
 
-  - <http://adventofcode.com/2021> :christmas\_tree:
+  - <http://adventofcode.com/2022> :christmas\_tree:
   - <https://www.postgresql.org/> :elephant: