docs: fix two typos in comments

src/main/java/de/stklcode/jvault/connector/HTTPVaultConnector.java

@@ -496,7 +496,7 @@ public class HTTPVaultConnector implements VaultConnector {
             throw new InvalidRequestException("Secret path must not be empty.");
         }
 
-        // By default data is directly passed as payload.
+        // By default, data is directly passed as payload.
         Object payload = data;
 
         // If options are given, split payload in two parts.

src/main/java/de/stklcode/jvault/connector/HTTPVaultConnectorBuilder.java

@@ -293,7 +293,7 @@ public final class HTTPVaultConnectorBuilder {
     }
 
     /**
-     * Build connector based on the {@code }VAULT_ADDR} and {@code VAULT_CACERT} (optional) environment variables.
+     * Build connector based on the {@code VAULT_ADDR} and {@code VAULT_CACERT} (optional) environment variables.
      *
      * @return self
      * @throws VaultConnectorException if Vault address from environment variables is malformed