docs(bindings/java): better javadoc

[tisonkun]

AS IS

[tisonkun]

Javadoc can hardly handle headings. Update the comment in an identical expressed way.

[tisonkun]

Preview:

You can test locally with:

cd bindings/java
./mvnw site
./mvnw javadoc:javadoc
open target/site/apidocs/org/apache/opendal/ServiceConfig.Mysql.html

[codspeed-hq]

CodSpeed Performance Report

Merging #5572 will degrade performances by 18.88%

_{Comparing better-docs (d34a03c) with main (1026d8a)}

Summary

⚡ 4 improvements
❌ 12 regressions
✅ 57 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	buffer 256 KiB * 32 chunk	125.3 ns	154.4 ns	-18.88%
❌	buffer 256 KiB * 4 chunk	125.3 ns	154.4 ns	-18.88%
❌	buffer 4.00 MiB * 32 chunk	125.3 ns	154.4 ns	-18.88%
❌	buffer 4.00 MiB * 4 chunk	125.3 ns	154.4 ns	-18.88%
⚡	bytes buf 256 KiB * 32 advance	464.2 ns	405.8 ns	+14.37%
⚡	bytes buf 256 KiB * 4 advance	464.2 ns	405.8 ns	+14.37%
⚡	bytes buf 4.00 MiB * 32 advance	464.2 ns	405.8 ns	+14.37%
⚡	bytes buf 4.00 MiB * 4 advance	464.2 ns	405.8 ns	+14.37%
❌	256 KiB * 1000k chunk	125.3 ns	154.4 ns	-18.88%
❌	256 KiB * 1000k truncate	216.7 ns	245.8 ns	-11.86%
❌	256 KiB * 100k chunk	125.3 ns	154.4 ns	-18.88%
❌	256 KiB * 100k truncate	216.7 ns	245.8 ns	-11.86%
❌	256 KiB * 10k chunk	125.3 ns	154.4 ns	-18.88%
❌	256 KiB * 10k truncate	216.7 ns	245.8 ns	-11.86%
❌	256 KiB * 1k chunk	154.4 ns	183.6 ns	-15.89%
❌	256 KiB * 1k truncate	216.7 ns	245.8 ns	-11.86%