chore: update feegrant grant description (backport cosmos#10823) (c…

…osmos#10829)

* chore: update feegrant `grant` description (cosmos#10823)

## Description

Closes: #XXXX

---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

(cherry picked from commit a5128e7)

* updated change log

* Update CHANGELOG.md

Co-authored-by: atheeshp <59333759+atheeshp@users.noreply.github.com>
Co-authored-by: atheesh <atheesh@vitwit.com>

CHANGELOG.md

@@ -89,6 +89,9 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * [\#9829](https://github.com/cosmos/cosmos-sdk/pull/9829) Fixed Coin denom sorting not being checked during `Balance.Validate` check. Refactored the Validation logic to use `Coins.Validate` for `Balance.Coins`
 * [\#10061](https://github.com/cosmos/cosmos-sdk/pull/10061) and [\#10515](https://github.com/cosmos/cosmos-sdk/pull/10515) Ensure that `LegacyAminoPubKey` struct correctly unmarshals from JSON
 
+### Improvements
+* [#10823](https://github.com/cosmos/cosmos-sdk/pull/10823) updated ambiguous cli description for creating feegrant.
+
 ## [v0.44.5](https://github.com/cosmos/cosmos-sdk/releases/tag/v0.44.5) - 2021-12-02
 
 ### Improvements

x/feegrant/client/cli/tx.go

@@ -55,7 +55,7 @@ func NewCmdFeeGrant() *cobra.Command {
 
 Examples:
 %s tx %s grant cosmos1skjw... cosmos1skjw... --spend-limit 100stake --expiration 2022-01-30T15:04:05Z or
-%s tx %s grant cosmos1skjw... cosmos1skjw... --spend-limit 100stake --period 3600 --period-limit 10stake --expiration 36000 or
+%s tx %s grant cosmos1skjw... cosmos1skjw... --spend-limit 100stake --period 3600 --period-limit 10stake --expiration 2022-01-30T15:04:05Z or
 %s tx %s grant cosmos1skjw... cosmos1skjw... --spend-limit 100stake --expiration 2022-01-30T15:04:05Z 
 	--allowed-messages "/cosmos.gov.v1beta1.MsgSubmitProposal,/cosmos.gov.v1beta1.MsgVote"
 				`, version.AppName, feegrant.ModuleName, version.AppName, feegrant.ModuleName, version.AppName, feegrant.ModuleName,
@@ -174,7 +174,7 @@ Examples:
 	cmd.Flags().StringSlice(FlagAllowedMsgs, []string{}, "Set of allowed messages for fee allowance")
 	cmd.Flags().String(FlagExpiration, "", "The RFC 3339 timestamp after which the grant expires for the user")
 	cmd.Flags().String(FlagSpendLimit, "", "Spend limit specifies the max limit can be used, if not mentioned there is no limit")
-	cmd.Flags().Int64(FlagPeriod, 0, "period specifies the time duration in which period_spend_limit coins can be spent before that allowance is reset")
+	cmd.Flags().Int64(FlagPeriod, 0, "period specifies the time duration(in seconds) in which period_limit coins can be spent before that allowance is reset (ex: 3600)")
 	cmd.Flags().String(FlagPeriodLimit, "", "period limit specifies the maximum number of coins that can be spent in the period")
 
 	return cmd