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

[zibi]

Summary

[SystemZ} This revision fixes the following error caused by 301eb6b68f30074ee3a90e2dfbd11dfd87076323.
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.

[abhina.sreeskantharajan]

LGTM

clang/include/clang/Basic/AttrDocs.td

 def ArmStreamingDocs : Documentation {
   let Category = DocCatType;
   let Content = [{
 .. Note:: This attribute has not been implemented yet, but once it is
    implemented, it will behave as described below.
 
 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)
 
 * the function must be entered in streaming mode (that is, with PSTATE.SM
   set to 1)
 
 * the function must return in streaming mode
 
 See `Procedure Call Standard for the Arm® 64-bit Architecture (AArch64)
 <https://github.com/ARM-software/abi-aa>`_ for more details about
 streaming-interface functions.
 
 Clang manages PSTATE.SM automatically; it is not the source code's
 responsibility to do this.  For example, if a normal non-streaming
 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>`_
 for more details about this extension, and for other related SME features.
   }];
 }
 
 def AlwaysInlineDocs : Documentation {