chore: Resolve javadoc error messages (#1814)

Author: lqiu96

oauth2_http/java/com/google/auth/oauth2/AwsCredentials.java

@@ -273,8 +273,7 @@ public Builder setAwsSecurityCredentialsSupplier(
      * Sets the AWS regional credential verification URL. If set, will override any credential
      * verification URL provided in the credential source. If not set, the credential verification
      * URL will default to
-     *
-     * <p><a href=https://sts.{region}.amazonaws.com?Action=GetCallerIdentity&Version=2011-06-15>
+     * `https://sts.{region}.amazonaws.com?Action=GetCallerIdentity&amp;Version=2011-06-15`
      *
      * @param regionalCredentialVerificationUrlOverride the AWS credential verification url to set.
      * @return this {@code Builder} object

oauth2_http/java/com/google/auth/oauth2/ExternalAccountAuthorizedUserCredentials.java

@@ -131,7 +131,7 @@ private ExternalAccountAuthorizedUserCredentials(Builder builder) {
    * external source for authentication to Google Cloud Platform, you must validate it before
    * providing it to any Google API or library. Providing an unvalidated credential configuration to
    * Google APIs can compromise the security of your systems and data. For more information, refer
-   * to {@link <a
+   * to {@see <a
    * href="https://cloud.google.com/docs/authentication/external/externally-sourced-credentials">documentation</a>}.
    *
    * @param credentialsStream the stream with the credential definition
@@ -151,7 +151,7 @@ public static ExternalAccountAuthorizedUserCredentials fromStream(InputStream cr
    * external source for authentication to Google Cloud Platform, you must validate it before
    * providing it to any Google API or library. Providing an unvalidated credential configuration to
    * Google APIs can compromise the security of your systems and data. For more information, refer
-   * to {@link <a
+   * to {@see <a
    * href="https://cloud.google.com/docs/authentication/external/externally-sourced-credentials">documentation</a>}.
    *
    * @param credentialsStream the stream with the credential definition

oauth2_http/java/com/google/auth/oauth2/ExternalAccountCredentials.java

@@ -356,7 +356,7 @@ public Map<String, List<String>> getRequestMetadata(URI uri) throws IOException
    * external source for authentication to Google Cloud Platform, you must validate it before
    * providing it to any Google API or library. Providing an unvalidated credential configuration to
    * Google APIs can compromise the security of your systems and data. For more information, refer
-   * to {@link <a
+   * to {@see <a
    * href="https://cloud.google.com/docs/authentication/external/externally-sourced-credentials">documentation</a>}.
    *
    * @param credentialsStream the stream with the credential definition
@@ -377,7 +377,7 @@ public static ExternalAccountCredentials fromStream(InputStream credentialsStrea
    * external source for authentication to Google Cloud Platform, you must validate it before
    * providing it to any Google API or library. Providing an unvalidated credential configuration to
    * Google APIs can compromise the security of your systems and data. For more information, refer
-   * to {@link <a
+   * to {@see <a
    * href="https://cloud.google.com/docs/authentication/external/externally-sourced-credentials">documentation</a>}.
    *
    * @param credentialsStream the stream with the credential definition

oauth2_http/java/com/google/auth/oauth2/GoogleCredentials.java

@@ -216,7 +216,7 @@ public static GoogleCredentials getApplicationDefault(HttpTransportFactory trans
    * <p>Regardless of the method used, it is always your responsibility to validate configurations
    * received from external sources.
    *
-   * <p>See the {@link <a
+   * <p>See the {@see <a
    * href="https://cloud.google.com/docs/authentication/external/externally-sourced-credentials">documentation</a>}
    * for more details.
    *
@@ -259,7 +259,7 @@ public static GoogleCredentials fromStream(InputStream credentialsStream) throws
    * <p>Regardless of the method used, it is always your responsibility to validate configurations
    * received from external sources.
    *
-   * <p>See the {@link <a
+   * <p>See the {@see <a
    * href="https://cloud.google.com/docs/authentication/external/externally-sourced-credentials">documentation</a>}
    * for more details.
    *

oauth2_http/java/com/google/auth/oauth2/ServiceAccountCredentials.java

@@ -454,7 +454,7 @@ static ServiceAccountCredentials fromPkcs8(
    * external source for authentication to Google Cloud Platform, you must validate it before
    * providing it to any Google API or library. Providing an unvalidated credential configuration to
    * Google APIs can compromise the security of your systems and data. For more information, refer
-   * to {@link <a
+   * to {@see <a
    * href="https://cloud.google.com/docs/authentication/external/externally-sourced-credentials">documentation</a>}.
    *
    * @param credentialsStream the stream with the credential definition.
@@ -474,7 +474,7 @@ public static ServiceAccountCredentials fromStream(InputStream credentialsStream
    * external source for authentication to Google Cloud Platform, you must validate it before
    * providing it to any Google API or library. Providing an unvalidated credential configuration to
    * Google APIs can compromise the security of your systems and data. For more information, refer
-   * to {@link <a
+   * to {@see <a
    * href="https://cloud.google.com/docs/authentication/external/externally-sourced-credentials">documentation</a>}.
    *
    * @param credentialsStream the stream with the credential definition.