[docs] PCH usage documentation update
authorIvan Murashko <ivan.murashko@gmail.com>
Sat, 30 Apr 2022 20:42:08 +0000 (21:42 +0100)
committerIvan Murashko <ivan.murashko@gmail.com>
Tue, 3 May 2022 07:26:13 +0000 (08:26 +0100)
commitf6112f490cfeed05b42ae33cc994292000aee0da
tree2ac8e4c590897cfc8a4180f954b09e7d76b83f5b
parentfe7d0067bd355ff00b768e3ce8338018e5b104a5
[docs] PCH usage documentation update

The documentation has an incorrect example of PCH files usage via `-include` option. The possibility has not been available since [llvm-svn: 174385](https://reviews.llvm.org/rG48b72d81c8968f3d342557582db986a60aef2c54).

Differential Revision: https://reviews.llvm.org/D124719
clang/docs/UsersManual.rst