fix(config): Fix incorrect character in javadocs of JwtClientAuthConfig (#237)

Author: adutra

docs/configuration.md

@@ -460,7 +460,7 @@ The file must be in PEM format; it may contain a private key, or a private key a
 
 Supported key formats are:
 
-- RSA & ECDSA in PKCS#8 format (`BEGIN PRIVATE KEY`): always supported
+- RSA and ECDSA in PKCS#8 format (`BEGIN PRIVATE KEY`): always supported
 - RSA in PKCS#1 format (`BEGIN RSA PRIVATE KEY`): requires the BouncyCastle library
 - ECDSA in EC SEC 1 format (`BEGIN EC PRIVATE KEY`): requires the BouncyCastle library
 

oauth2/core/src/main/java/com/dremio/iceberg/authmgr/oauth2/config/JwtClientAuthConfig.java

@@ -120,7 +120,7 @@ public interface JwtClientAuthConfig {
    * <p>Supported key formats are:
    *
    * <ul>
-   *   <li>RSA & ECDSA in PKCS#8 format ({@code BEGIN PRIVATE KEY}): always supported
+   *   <li>RSA and ECDSA in PKCS#8 format ({@code BEGIN PRIVATE KEY}): always supported
    *   <li>RSA in PKCS#1 format ({@code BEGIN RSA PRIVATE KEY}): requires the BouncyCastle library
    *   <li>ECDSA in EC SEC 1 format ({@code BEGIN EC PRIVATE KEY}): requires the BouncyCastle
    *       library