DATAMONGO-2075 - Polishing.

Tweaks to Javadoc and reference docs to align with american-english spelling.

Original pull request: #606.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/MongoTransactionManager.java

@@ -51,8 +51,8 @@ import com.mongodb.client.ClientSession;
  * By default failure of a {@literal commit} operation raises a {@link TransactionSystemException}. One may override
  * {@link #doCommit(MongoTransactionObject)} to implement the
  * <a href="https://docs.mongodb.com/manual/core/transactions/#retry-commit-operation">Retry Commit Operation</a>
- * behaviour as outlined in the MongoDB reference manual.
- * 
+ * behavior as outlined in the MongoDB reference manual.
+ *
  * @author Christoph Strobl
  * @author Mark Paluch
  * @currentRead Shadow's Edge - Brent Weeks
@@ -75,7 +75,7 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 	 * <p />
 	 * Optionally it is possible to set default {@link TransactionOptions transaction options} defining
 	 * {@link com.mongodb.ReadConcern} and {@link com.mongodb.WriteConcern}.
-	 * 
+	 *
 	 * @see #setDbFactory(MongoDbFactory)
 	 * @see #setTransactionSynchronization(int)
 	 */
@@ -227,8 +227,9 @@ public class MongoTransactionManager extends AbstractPlatformTransactionManager
 	 * } while (--retries > 0);
 	 *     </pre>
 	 * </code>
-	 * 
+	 *
 	 * @param transactionObject never {@literal null}.
+	 * @throws Exception in case of transaction errors.
 	 */
 	protected void doCommit(MongoTransactionObject transactionObject) throws Exception {
 		transactionObject.commitTransaction();

src/main/asciidoc/reference/client-session-transactions.adoc

@@ -317,11 +317,11 @@ structures in place.
 
 *Transient Errors*
 
-MongoDB can add special labels to errors raised during a transactional execution. Those may indicate transient failures
-that might vanish by simply retrying the operation.
+MongoDB can add special labels to errors raised during transactional execution. Those may indicate transient failures
+that might vanish by merely retrying the operation.
 We highly recommend https://github.com/spring-projects/spring-retry[Spring Retry] for those purposes. Nevertheless
 one may override `MongoTransactionManager#doCommit(MongoTransactionObject)` to implement a https://docs.mongodb.com/manual/core/transactions/#retry-commit-operation[Retry Commit Operation]
-behaviour as outlined in the MongoDB reference manual.
+behavior as outlined in the MongoDB reference manual.
 
 *Count*