add hint (#46)

Signed-off-by: husharp <[email protected]>

mini-lsm-book/src/week2-05-manifest.md

@@ -7,6 +7,13 @@ In this chapter, you will:
 * Implement encoding and decoding of the manifest file.
 * Recover from the manifest when the system restarts.
 
+To copy the test cases into the starter code and run them,
+
+```
+cargo x copy-test --week 2 --day 5
+cargo x scheck
+```
+
 ## Task 1: Manifest Encoding
 
 The system uses a manifest file to record all operations happened in the engine. Currently, there are only two types of them: compaction and SST flush. When the engine restarts, it will read the manifest file, reconstruct the state, and load the SST files on the disk.

mini-lsm-book/src/week2-06-wal.md

@@ -7,6 +7,13 @@ In this chapter, you will:
 * Implement encoding and decoding of the write-ahead log file.
 * Recover memtables from the WALs when the system restarts.
 
+To copy the test cases into the starter code and run them,
+
+```
+cargo x copy-test --week 2 --day 6
+cargo x scheck
+```
+
 ## Task 1: WAL Encoding
 
 In this task, you will need to modify: