Fix coredump when use hellodict example module

[Codebells]

In the ValkeyModule_OnLoad method of the file hellodict.c, the parameter keystep of ValkeyModule_CreateCommand should be 1. Otherwise, execute command will coredump.

MODULE LOAD /home/tiger/valkey/src/modules/hellodict.so
COMMAND GETKEYS HELLODICT.SET key value

[zuiderkwast]

Thanks!

We obviously we don't have any tests for these example modules.

We should probably add tests for them if we want to keep them in the repo.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.85%. Comparing base (a401e37) to head (507eb2c).
Report is 3 commits behind head on unstable.

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable    #1395      +/-   ##
============================================
+ Coverage     70.69%   70.85%   +0.16%     
============================================
  Files           118      118              
  Lines         63549    63549              
============================================
+ Hits          44924    45029     +105     
+ Misses        18625    18520     -105     

see 9 files with indirect coverage changes

[Codebells]

Agree, I will add tests for them in next MR.