Fixed wrong method names in the DocBlocks

[zepich]

I tried to use the ZipStream package today and copied the code from the example for a simple test.

But my IDE told me, that the method addFileFormPath does not exist (as visible here: https://github.com/maennchen/ZipStream-PHP/blob/main/src/ZipStream.php#L62).

After some time of searching and head-scratching, I saw the simple typo. I found some other wrong method names in the DocBlocks and adjusted them.

[coveralls]

Pull Request Test Coverage Report for Build 7608043128

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 7566932757:	0.0%
Covered Lines:	519
Relevant Lines:	519

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💛 - Coveralls