Modify README for shared library compilation flags

Update instructions for building gtest as a shared library

The previous flag `GTEST_CREATE_SHARED_LIBRARY` is not supported and triggers the following CMake warning:

  Manually-specified variables were not used by the project:
    GTEST_CREATE_SHARED_LIBRARY

Remove this obsolete flag and update the build instructions accordingly.
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Wuzhuodong 2025-11-06 16:29:26 +08:00 committed by GitHub
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commit e1a97d4c23
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@ -177,7 +177,7 @@ as a DLL on Windows) if you prefer.
To compile *gtest* as a shared library, add
```
-DGTEST_CREATE_SHARED_LIBRARY=1
-DBUILD_SHARED_LIBS=1
```
to the compiler flags. You'll also need to tell the linker to produce a shared