Removing pr template and updating language

Signed-off-by: Harsha Vamsi Kalluri <harshavamsi096@gmail.com>

CONTRIBUTING.md

@@ -6,7 +6,7 @@
   - [Contributing Code](#contributing-code)
 - [Developer Certificate of Origin](#developer-certificate-of-origin)
 - [Changelog](#changelog)
-  - [Adding changes](#adding-changes)
+  - [Adding Changes](#adding-changes)
 - [Review Process](#review-process)
 
 ## Contributing to OpenSearch
@@ -84,12 +84,12 @@ You may type this line on your own when writing your commit messages. However, i
 
 ## Changelog
 
-OpenSearch-Java maintains a version specific changelog by enforcing a change to the ongoing [CHANGELOG](CHANGELOG.md) file adhering to the [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) format.
+OpenSearch-java maintains a version specific changelog by enforcing a change to the ongoing [CHANGELOG](CHANGELOG.md) file adhering to the [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) format.
 
 The changes are curated by version, with the changes to the main branch added chronologically to the `Unreleased` version. Each version has corresponding sections which list out the category of the change - `Added`, `Changed`, `Deprecated`, `Removed`, `Fixed`, `Security`.
 
 
-### Adding changes
+### Adding Changes
 
 As a contributor, you must ensure that every pull request has its changes listed out within the corresponding version and appropriate section of the [CHANGELOG](CHANGELOG.md) file.
 
@@ -98,7 +98,6 @@ Adding in the change is a two step process -
 
 2. Update the entry for your change in [`CHANGELOG.md`](CHANGELOG.md) and make sure that you reference the pull request there.
 
-
 ## Review Process
 
 We deeply appreciate everyone who takes the time to make a contribution. We will review all contributions as quickly as possible. As a reminder, [opening an issue](https://github.com/opensearch-project/opensearch-java/issues/new/choose) discussing your change before you make it is the best way to smooth the PR process. This will prevent a rejection because someone else is already working on the problem, or because the solution is incompatible with the architectural direction.

java-client/build.gradle.kts

@@ -74,6 +74,12 @@ tasks.withType<ProcessResources> {
     )
 }
 
+tasks.withType<Javadoc>().configureEach{
+    options {
+        encoding = "UTF-8"
+    }
+}
+
 tasks.withType<Jar> {
     doFirst {
         if (rootProject.extra.has("gitHashFull")) {
@@ -133,7 +139,7 @@ dependencies {
 
     val opensearchVersion = "2.3.0"
     val jacksonVersion = "2.13.4"
-    val jacksonDatabindVersion = "2.13.4"
+    val jacksonDatabindVersion = "2.13.4.2"
 
     // Apache 2.0
     implementation("org.opensearch.client", "opensearch-rest-client", opensearchVersion)