Tweak Known Amendments format so that the mainnet status header doesn't block the source link

@l10n/ja/resources/known-amendments.md

@@ -7,9 +7,11 @@ labels:
 # 既知のAmendment
 [[ソース]](https://github.com/XRPLF/rippled/blob/develop/include/xrpl/protocol/detail/features.macro "Source")
 
-## メインネットの既知のAmendment
+以下に示すのは、XRP Ledgerに関する既知のAmendmentのすべてとそのステータスをまとめた総合リストです。
 
-以下に示すのは、本番環境のXRP Ledgerに関する既知のAmendmentのすべてとそのステータスをまとめた総合リストです。
+## メインネットのステータス
+
+以下のAmendmentは、XRP Ledgerメインネットですでに有効になっているか、投票中であり、2週間にわたって過半数の賛成が得られれば有効になる可能性があります。
 
 {% admonition type="success" name="ヒント" %}
 このリストは手動で更新されています。最新のステータスはAmendmentダッシュボードをご覧下さい：[XRPScan](https://xrpscan.com/amendments)、[Bithomp](https://bithomp.com/en/amendments)。

resources/known-amendments.md

@@ -7,9 +7,11 @@ labels:
 # Known Amendments
 [[Source]](https://github.com/XRPLF/rippled/blob/develop/include/xrpl/protocol/detail/features.macro "Source")
 
-## Known Amendments on Mainnet
+This page lists all known [amendments](../docs/concepts/networks-and-servers/amendments.md) and their statuses.
 
-The following is a comprehensive list of all known [amendments](../docs/concepts/networks-and-servers/amendments.md) and their status on the production XRP Ledger:
+## Mainnet Status
+
+The following amendments are either already enabled on the XRP Ledger Mainnet or are open for voting and can become enabled if they hold a supermajority for at least two weeks:
 
 {% admonition type="success" name="Tip" %}
 This list is updated manually. For a live view of amendment voting, see the Amendments Dashboards: [XRPScan](https://xrpscan.com/amendments), [Bithomp](https://bithomp.com/en/amendments).
@@ -113,7 +115,7 @@ In many cases, an incomplete version of the code for an amendment is present in
 
 ## Amendments in Development
 
-The following is a list of [amendments](../docs/concepts/networks-and-servers/amendments.md) that are being developed and a private network is available to test the changes.
+The following is a list of [amendments](../docs/concepts/networks-and-servers/amendments.md) that are being actively developed. They can become open for voting on Mainnet if they are included in a stable server release, and they may already be enabled on [other networks](../docs/concepts/networks-and-servers/parallel-networks.md).
 
 | Name                              | Status                                    | Additional Information         |
 |:----------------------------------|:------------------------------------------|:-------------------------------|
@@ -129,7 +131,7 @@ This list is updated manually. If you're working on an amendment and have a priv
 
 ## Obsolete Amendments
 
-The following is a list of known [amendments](../docs/concepts/networks-and-servers/amendments.md) that have been removed in a previous version, or are obsolete and have been marked for removal.
+The following is a list of known [amendments](../docs/concepts/networks-and-servers/amendments.md) that have been removed in a previous version of the core server, or are obsolete and have been marked for removal.
 
 | Name                              | Introduced | Status                        |
 |:----------------------------------|:-----------|:------------------------------|