fix(launch): allow underscore for param name in ParamChange request

[lumtis]

No description provided.

[codecov]

Codecov Report

Merging #995 (27a54c4) into main (a217c11) will decrease coverage by 0.66%.
The diff coverage is 15.38%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #995      +/-   ##
==========================================
- Coverage   11.21%   10.55%   -0.67%     
==========================================
  Files         278      275       -3     
  Lines       60771    66482    +5711     
==========================================
+ Hits         6818     7016     +198     
- Misses      53765    59297    +5532     
+ Partials      188      169      -19     

Impacted Files	Coverage Δ
pkg/types/monitoring.pb.go	0.79% <ø> (ø)
pkg/types/validator_set.go	92.30% <ø> (ø)
pkg/types/ibc.pb.go	0.69% <4.34%> (ø)
pkg/types/consensus_state.go	100.00% <100.00%> (ø)
pkg/types/signature_counts.go	100.00% <100.00%> (ø)
...articipation/client/cli/query_total_allocations.go	0.00% <0.00%> (-88.47%)	⬇️
...cipation/client/cli/query_available_allocations.go	0.00% <0.00%> (-88.47%)	⬇️
x/campaign/client/cli/query_mainnet_account.go	40.16% <0.00%> (-40.17%)	⬇️
x/launch/types/request_content.go	91.66% <0.00%> (-8.34%)	⬇️
x/launch/simulation/store.go	58.46% <0.00%> (-7.09%)	⬇️
... and 162 more