Removed dash from micrometer metric label

Closes gh-13660

Author: Ducius6

web/src/main/java/org/springframework/security/web/ObservationFilterChainDecorator.java

@@ -144,8 +144,8 @@ static final class ObservationFilter implements Filter {
 		private static final Map<String, String> OBSERVATION_NAMES = new HashMap<>();
 
 		static {
-			OBSERVATION_NAMES.put("DisableEncodeUrlFilter", "session.url-encoding");
-			OBSERVATION_NAMES.put("ForceEagerSessionCreationFilter", "session.eager-create");
+			OBSERVATION_NAMES.put("DisableEncodeUrlFilter", "session.urlencoding");
+			OBSERVATION_NAMES.put("ForceEagerSessionCreationFilter", "session.eagercreate");
 			OBSERVATION_NAMES.put("ChannelProcessingFilter", "access.channel");
 			OBSERVATION_NAMES.put("WebAsyncManagerIntegrationFilter", "context.async");
 			OBSERVATION_NAMES.put("SecurityContextHolderFilter", "context.holder");