Remove punctuation in all exception messages.

Closes #2603.

src/main/java/org/springframework/data/convert/ConfigurableTypeInformationMapper.java

@@ -33,6 +33,7 @@ import org.springframework.util.Assert;
  * inspecting the {@link PersistentEntity} instances for type alias information.
  *
  * @author Oliver Gierke
+ * @author Johannes Englmeier
  */
 public class ConfigurableTypeInformationMapper implements TypeInformationMapper {
 
@@ -58,7 +59,7 @@ public class ConfigurableTypeInformationMapper implements TypeInformationMapper
 
 			if (typeToAlias.containsValue(alias)) {
 				throw new IllegalArgumentException(
-						String.format("Detected mapping ambiguity! String %s cannot be mapped to more than one type!", alias));
+						String.format("Detected mapping ambiguity! String %s cannot be mapped to more than one type", alias));
 			}
 
 			this.typeToAlias.put(type, alias);

src/main/java/org/springframework/data/convert/CustomConversions.java

@@ -54,6 +54,7 @@ import org.springframework.util.ObjectUtils;
  * @author Christoph Strobl
  * @author Mark Paluch
  * @author Xeno Amess
+ * @author Johannes Englmeier
  * @since 2.0
  */
 public class CustomConversions {

src/main/java/org/springframework/data/convert/DefaultConverterBuilder.java

@@ -38,6 +38,7 @@ import org.springframework.util.ObjectUtils;
  *
  * @author Oliver Gierke
  * @author Mark Paluch
+ * @author Johannes Englmeier
  * @since 2.0
  * @see ConverterBuilder#writing(Class, Class, Function)
  * @see ConverterBuilder#reading(Class, Class, Function)
@@ -61,13 +62,13 @@ record DefaultConverterBuilder<S, T> (ConvertiblePair convertiblePair,
 	@Override
 	public GenericConverter getReadingConverter() {
 		return getOptionalReadingConverter()
-				.orElseThrow(() -> new IllegalStateException("No reading converter specified!"));
+				.orElseThrow(() -> new IllegalStateException("No reading converter specified"));
 	}
 
 	@Override
 	public GenericConverter getWritingConverter() {
 		return getOptionalWritingConverter()
-				.orElseThrow(() -> new IllegalStateException("No writing converter specified!"));
+				.orElseThrow(() -> new IllegalStateException("No writing converter specified"));
 	}
 
 	@Override

src/main/java/org/springframework/data/convert/MappingContextTypeInformationMapper.java

@@ -34,6 +34,7 @@ import org.springframework.util.Assert;
  *
  * @author Oliver Gierke
  * @author Christoph Strobl
+ * @author Johannes Englmeier
  */
 public class MappingContextTypeInformationMapper implements TypeInformationMapper {
 
@@ -87,7 +88,7 @@ public class MappingContextTypeInformationMapper implements TypeInformationMappe
 		if (existingAlias.isPresentButDifferent(alias)) {
 
 			throw new IllegalArgumentException(
-					String.format("Trying to register alias '%s', but found already registered alias '%s' for type %s!", alias,
+					String.format("Trying to register alias '%s', but found already registered alias '%s' for type %s", alias,
 							existingAlias, key));
 		}
 
@@ -100,7 +101,7 @@ public class MappingContextTypeInformationMapper implements TypeInformationMappe
 					.findFirst().ifPresent(it -> {
 
 						throw new IllegalArgumentException(String.format(
-								"Detected existing type mapping of %s to alias '%s' but attempted to bind the same alias to %s!", key,
+								"Detected existing type mapping of %s to alias '%s' but attempted to bind the same alias to %s", key,
 								alias, it.getKey()));
 					});
 		}