Remove 3-byte characters causing clang-tblgen to get I/O error.

[SystemZ} This revision fixes the following error caused by 301eb6b.
LLVM ERROR: IO failure on output stream: EDC5122I Input/output error.

The characters seems to be 3-byte characters which cause the failure with auto conversion from EBCDIC to ASCII.
Credit to @kai who found this issue.

Reviewed By: abhina.sreeskantharajan

Differential Revision: https://reviews.llvm.org/D152016

Author: zibi2

clang/include/clang/Basic/AttrDocs.td

@@ -6559,7 +6559,7 @@ def ArmStreamingDocs : Documentation {
 
 The ``__arm_streaming`` keyword is only available on AArch64 targets.
 It applies to function types and specifies that the function has a
-“streaming interface”.  This means that:
+"streaming interface".  This means that:
 
 * the function requires the Scalable Matrix Extension (SME)
 
@@ -6578,7 +6578,7 @@ function calls an ``__arm_streaming`` function, Clang generates code
 that switches into streaming mode before calling the function and
 switches back to non-streaming mode on return.
 
-``__arm_streaming`` can appear anywhere that a standard ``[[…]]`` type
+``__arm_streaming`` can appear anywhere that a standard ``[[...]]`` type
 attribute can appear.
 
 See `Arm C Language Extensions <https://github.com/ARM-software/acle>`_