[Doc] Broker JVM options in docs/cn/Configuration_System.md are syntactically invalid (missing ":" after -XX) #11278

Description

The JVM options listed in docs/cn/Configuration_System.md (Section 1, broker JVM parameters) are syntactically invalid and cannot be used to start a JVM.

Examples of the broken text currently in the page:

-XXMaxDirectMemorySize=15g
-XX+AlwaysPreTouch
-XX-UseBiasedLocking
-XX+UseG1GC -XXG1HeapRegionSize=16m
-XXG1ReservePercent=25
-XXInitiatingHeapOccupancyPercent=30
-XX+UseGCLogFileRotation
-XXNumberOfGCLogFiles=5
-XXGCLogFileSize=30m
-Xloggcdevshmmq_gc_%p.log123

All -XX options are missing the colon after -XX (e.g. it must be -XX:MaxDirectMemorySize=15g, -XX:+AlwaysPreTouch), and the -Xloggc example lost its colon and path separators.

Verification: java -XXMaxDirectMemorySize=15g -version fails with Unrecognized option: -XXMaxDirectMemorySize=15g and exit code 1.

The correct spellings already exist in docs/en/Configuration_System.md (e.g. -XX:MaxDirectMemorySize=15g, -XX:+AlwaysPreTouch) and in distribution/bin/runbroker.sh (-XX:+AlwaysPreTouch, -XX:MaxDirectMemorySize=15g). It looks like the Chinese page was translated/mangled at some point and the colons were dropped.

Expected behavior

A user copying the JVM options from the Chinese system-configuration doc should get options that a JVM accepts, matching the English page and runbroker.sh. Today every copy-pasted option in that section fails with Unrecognized option, which is particularly unfriendly for Chinese-speaking users following the official doc.