Fix outdated jdk versions in some places

README.md

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+
+EN | [中文](README_zh-CN.md)
 
 **Attention:** We always welcome contributors to the project. Before adding your contribution, please carefully read our [Code of Conduct](https://github.com/Grasscutters/Grasscutter/blob/stable/CONTRIBUTING.md).
 
@@ -22,7 +24,7 @@
 
 ### Requirements
 
-* Java - SE ([mirror link](https://github.com/adoptium/temurin16-binaries/releases/tag/jdk-16.0.2+7) since Oracle required an account to download old builds)
+* Java SE - 16 ([mirror link](https://github.com/adoptium/temurin16-binaries/releases/tag/jdk-16.0.2+7) since Oracle required an account to download old builds)
 
   **Note:** If you just want to **run it**, then **jre** is fine 
 
@@ -73,7 +75,7 @@ Grasscutter uses Gradle to handle dependencies & building.
 
 **Requirements:**
 
-- Java Development Kits - 8u202
+- Java SE Development Kits - 16
 - Git
 
 ##### Windows
@@ -108,7 +110,7 @@ There is a dummy user named "Server" in every player's friends list that you can
 | broadcast      | broadcast <message>                               | server.broadcast          | Both side    | Sends a message to all the players.                          | b                                               |
 | changescene    | changescene <scene id>                            | player.changescene        | Client only  | Switch scenes by scene ID.                                   | scene                                           |
 | clearartifacts | clearartifacts                                    | player.clearartifacts     | Client only  | Deletes all unequipped and unlocked level 0 artifacts, including yellow rarity ones from your inventory. | clearart                                        |
-| clearweapons   | clearweapons                                      | player.clearweapons       | Client only  | Deletes all unequipped and unlocked weapons, including yellow rarity ones from your inventory. | clearwpns                                       |
+| clearweapons   | clearweapons                                      | player.clearweapons       | Client only  | Deletes all unequipped and unlocked weapons, including yellow rarity ones from your inventory. | clearwp                                         |
 | drop           | drop <itemID\|itemName> [amount]                  | server.drop               | Client only  | Drops an item around you.                                    | `d` `dropitem`                                  |
 | give           | give [player] <itemId\|itemName> [amount] [level] | player.give               | Both side    | Gives item(s) to you or the specified player.                | `g` `item` `giveitem`                           |
 | givechar       | givechar <uid> <avatarId> [level]                 | player.givechar           | Both side    | Gives the player a specified character.                      | givec                                           |
@@ -124,7 +126,7 @@ There is a dummy user named "Server" in every player's friends list that you can
 | resetconst     | resetconst [all]                                  | player.resetconstellation | Client only  | Resets the constellation level on your current active character, will need to relog after using the command to see any changes. | resetconstellation                              |
 | restart        |                                                   |                           | Both side    | Restarts the current session                                 |                                                 |
 | say            | say <player> <message>                            | server.sendmessage        | Both side    | Sends a message to a player as the server                    | `sendservmsg` `sendservermessage` `sendmessage` |
-| setfetterlevel | setfetterlevel <level>                            | player.setfetterlevel     | Client only  | Sets your fetter level for your current active character     | setfetterlvl                                    |
+| setfetterlevel | setfetterlevel <level>                            | player.setfetterlevel     | Client only  | Sets your fetter level for your current active character     | `setfetterlvl` `setfriendship`                  |
 | setstats       | setstats <stat> <value>                           | player.setstats           | Client only  | Set fight property for your current active character         | stats                                           |
 | setworldlevel  | setworldlevel <level>                             | player.setworldlevel      | Client only  | Sets your world level (Relog to see proper effects)          | setworldlvl                                     |
 | spawn          | spanw <entityID\|entityName> [level] [amount]     | server.spawn              | Client only  | Spawns an entity near you                                    |                                                 |
@@ -140,8 +142,7 @@ character falling from a very high destination, exact location that you marked.
 
 # Quick Troubleshooting
 
-* If compiling wasn't successful, please check your JDK installation (must be JDK 8 and validated JDK's bin PATH
-  variable)
+* If compiling wasn't successful, please check your JDK installation (must be JDK 16 and validated JDK's bin PATH variable)
 * My client doesn't connect, doesn't login, 4206, etc... - Mostly your proxy daemon setup is *the issue*, if using
   Fiddler make sure it running on another port except 8888
 * Startup sequence: Mongodb > Grasscutter > Proxy daemon (mitmdump, fiddler, etc.) > Client