checkstyle.xml: stricter properties for 3 modules

Author: stephengold

config/checkstyle/checkstyle.xml

@@ -267,7 +267,7 @@
                      value="Method name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="MethodTypeParameterName">
-            <property name="format" value="(^[A-Z][0-9]?)$|([A-Z][a-zA-Z0-9]*[T]$)"/>
+            <property name="format" value="(^[A-Z]$)"/>
             <message key="name.invalidPattern"
                      value="Method type name ''{0}'' must match pattern ''{1}''."/>
         </module>
@@ -282,12 +282,12 @@
                      value="Parameter name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="PatternVariableName">
-            <property name="format" value="^[a-z]{0,9}$"/>
+            <property name="format" value="^[a-z]{1,9}$"/>
             <message key="name.invalidPattern"
                      value="Pattern variable name ''{0}'' must match pattern ''{1}''."/>
         </module>
         <module name="RecordComponentName">
-            <property name="format" value="^[a-z]{0,9}$"/>
+            <property name="format" value="^[a-z]{1,9}$"/>
             <message key="name.invalidPattern"
                      value="Record component name ''{0}'' must match pattern ''{1}''."/>
         </module>