[typo](docs) Optimize FE minor version upgrade document (apache#15822)

Co-authored-by: day.na <[email protected]>

docs/en/docs/admin-manual/cluster-management/upgrade.md

@@ -81,7 +81,7 @@ Doris can upgrade smoothly by rolling upgrades. The following steps are recommen
 ## Upgrade preparation
 
 1. After data validation, the new version of BE and FE binary files are distributed to their respective directories.
-2. Usually small version upgrade, BE only needs to upgrade doris_be; FE only needs to upgrade palo-fe.jar. If it is a large version upgrade, you may need to upgrade other files (including but not limited to bin / lib / etc.) If you are not sure whether you need to replace other files, it is recommended to replace all of them.
+2. Usually small version upgrade, BE only needs to upgrade doris_be; FE only needs to upgrade doris-fe.jar (earlier versions was palo-fe.jar). If it is a large version upgrade, you may need to upgrade other files (including but not limited to bin / lib / etc.) If you are not sure whether you need to replace other files, it is recommended to replace all of them.
 
 ## rolling upgrade
 

docs/zh-CN/docs/admin-manual/cluster-management/upgrade.md

@@ -86,7 +86,7 @@ Doris 可以通过滚动升级的方式，平滑进行升级。建议按照以
 ## 升级准备
 
 1. 在完成数据正确性验证后，将 BE 和 FE 新版本的二进制文件分发到各自目录下。
-2. 通常小版本升级，BE 只需升级 doris_be；而 FE 只需升级 palo-fe.jar。如果是大版本升级，则可能需要升级其他文件（包括但不限于 bin/ lib/ 等等）如果你不清楚是否需要替换其他文件，建议全部替换。
+2. 通常小版本升级，BE 只需升级 doris_be；而 FE 只需升级 doris-fe.jar（旧版本叫做palo-fe.jar）。如果是大版本升级，则可能需要升级其他文件（包括但不限于 bin/ lib/ 等等）如果你不清楚是否需要替换其他文件，建议全部替换。
 
 ## 滚动升级