[compiler-rt] [libFuzzer] Fix typos and punctuation in flag descriptions (PR #122619)

[via llvm-commits]

github-actions[bot] wrote:

<!--PREMERGE ADVISOR COMMENT: Windows-->
# :window: Windows x64 Test Results

* 1662 tests passed
* 1375 tests skipped
* 1 test failed

## Failed Tests
(click on a test name to see its output)

### Profile-x86_64
<details>
<summary>Profile-x86_64.Profile-x86_64/instrprof-thinlto-indirect-call-promotion.cpp</summary>

```
Exit Code: 127

Command Output (stdout):
--
# RUN: at line 31
rm -rf C:\_work\llvm-project\llvm-project\build\runtimes\runtimes-bins\compiler-rt\test\profile\Profile-x86_64\Output\instrprof-thinlto-indirect-call-promotion.cpp.tmp && split-file C:\_work\llvm-project\llvm-project\compiler-rt\test\profile\instrprof-thinlto-indirect-call-promotion.cpp C:\_work\llvm-project\llvm-project\build\runtimes\runtimes-bins\compiler-rt\test\profile\Profile-x86_64\Output\instrprof-thinlto-indirect-call-promotion.cpp.tmp && cd C:\_work\llvm-project\llvm-project\build\runtimes\runtimes-bins\compiler-rt\test\profile\Profile-x86_64\Output\instrprof-thinlto-indirect-call-promotion.cpp.tmp
# executed command: rm -rf 'C:\_work\llvm-project\llvm-project\build\runtimes\runtimes-bins\compiler-rt\test\profile\Profile-x86_64\Output\instrprof-thinlto-indirect-call-promotion.cpp.tmp'
# note: command had no output on stdout or stderr
# executed command: split-file 'C:\_work\llvm-project\llvm-project\compiler-rt\test\profile\instrprof-thinlto-indirect-call-promotion.cpp' 'C:\_work\llvm-project\llvm-project\build\runtimes\runtimes-bins\compiler-rt\test\profile\Profile-x86_64\Output\instrprof-thinlto-indirect-call-promotion.cpp.tmp'
# note: command had no output on stdout or stderr
# executed command: cd 'C:\_work\llvm-project\llvm-project\build\runtimes\runtimes-bins\compiler-rt\test\profile\Profile-x86_64\Output\instrprof-thinlto-indirect-call-promotion.cpp.tmp'
# note: command had no output on stdout or stderr
# RUN: at line 36
C:/_work/llvm-project/llvm-project/build/./bin/clang.exe    -D_MT -D_DLL -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames  -Wl,-incremental:no  -fprofile-generate -fuse-ld=lld -O2 lib.cpp main.cpp -o main
# executed command: C:/_work/llvm-project/llvm-project/build/./bin/clang.exe -D_MT -D_DLL -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames -Wl,-incremental:no -fprofile-generate -fuse-ld=lld -O2 lib.cpp main.cpp -o main
# note: command had no output on stdout or stderr
# RUN: at line 37
env LLVM_PROFILE_FILE=main.profraw  ./main
# executed command: env LLVM_PROFILE_FILE=main.profraw ./main
# note: command had no output on stdout or stderr
# RUN: at line 38
llvm-profdata merge main.profraw -o main.profdata
# executed command: llvm-profdata merge main.profraw -o main.profdata
# note: command had no output on stdout or stderr
# RUN: at line 42
C:/_work/llvm-project/llvm-project/build/./bin/clang.exe    -D_MT -D_DLL -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames  -Wl,-incremental:no -mllvm -disable-icp -fprofile-use=main.profdata -flto=thin -O2 -c lib.cpp -o lib.bc
# executed command: C:/_work/llvm-project/llvm-project/build/./bin/clang.exe -D_MT -D_DLL -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames -Wl,-incremental:no -mllvm -disable-icp -fprofile-use=main.profdata -flto=thin -O2 -c lib.cpp -o lib.bc
# .---command stderr------------
# | clang: warning: -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames: 'linker' input unused [-Wunused-command-line-argument]
# | clang: warning: -Wl,-incremental:no: 'linker' input unused [-Wunused-command-line-argument]
# `-----------------------------
# RUN: at line 45
C:/_work/llvm-project/llvm-project/build/./bin/clang.exe    -D_MT -D_DLL -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames  -Wl,-incremental:no -fprofile-use=main.profdata -flto=thin -O2 -c main.cpp -o main.bc
# executed command: C:/_work/llvm-project/llvm-project/build/./bin/clang.exe -D_MT -D_DLL -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames -Wl,-incremental:no -fprofile-use=main.profdata -flto=thin -O2 -c main.cpp -o main.bc
# .---command stderr------------
# | clang: warning: -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames: 'linker' input unused [-Wunused-command-line-argument]
# | clang: warning: -Wl,-incremental:no: 'linker' input unused [-Wunused-command-line-argument]
# `-----------------------------
# RUN: at line 48
llvm-dis lib.bc -o - | FileCheck C:\_work\llvm-project\llvm-project\compiler-rt\test\profile\instrprof-thinlto-indirect-call-promotion.cpp --check-prefix=PGOName
# executed command: llvm-dis lib.bc -o -
# .---command stderr------------
# | 'llvm-dis': command not found
# `-----------------------------
# error: command failed with exit status: 127

--

```
</details>

If these failures are unrelated to your changes (for example tests are broken or flaky at HEAD), please open an issue at https://github.com/llvm/llvm-project/issues and add the `infrastructure` label.

https://github.com/llvm/llvm-project/pull/122619