minor: fixed P tag content's placement in CauseParameterInExceptionCheck.java #321

Job	Run time
no-exception (checkstyle)	1m 21s
no-exception (struts)	1m 52s
no-exception (guava)	3m 39s
no-exception (hibernate-orm)	2m 46s
no-exception (spotbugs)	2m 31s
no-exception (spring-framework)	2m 2s
no-exception (hbase)	2m 55s
no-exception (pmd-elasticsearch-lombok-ast)	4m 8s
no-exception (alot-of-projects)	2m 46s
	24m 0s

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