[CI-SKIP] Update README.md (for 1.16.2) (PaperMC#4202)

- Change the section "Plugin Developers" with 1.16.2
- Update Badges for 1.16

README.md

@@ -1,4 +1,4 @@
-Paper [![Build Status](https://papermc.io/ci/job/Paper-1.15/badge/icon)](https://papermc.io/ci/job/Paper-1.15/)
+Paper [![Build Status](https://papermc.io/ci/job/Paper-1.16/badge/icon)](https://papermc.io/ci/job/Paper-1.16/)
 ===========
 
 High performance Spigot fork that aims to fix gameplay and mechanics inconsistencies.
@@ -36,7 +36,7 @@ How To (Plugin Developers)
 <dependency>
     <groupId>com.destroystokyo.paper</groupId>
     <artifactId>paper-api</artifactId>
-    <version>1.16.1-R0.1-SNAPSHOT</version>
+    <version>1.16.2-R0.1-SNAPSHOT</version>
     <scope>provided</scope>
 </dependency>
  ```
@@ -54,7 +54,7 @@ repositories {
  * Artifact:
 ```groovy
 dependencies {
-    compileOnly 'com.destroystokyo.paper:paper-api:1.16.1-R0.1-SNAPSHOT'
+    compileOnly 'com.destroystokyo.paper:paper-api:1.16.2-R0.1-SNAPSHOT'
 }
 ```