[NFC][AArch64] fix whitespace in AArch64SchedNeoverseV1 (llvm#81744)

One of the whitespace fixes didn't get added to the commit introducing
the Ampere1B model.
Clean it up.

(cherry picked from commit 3369e34)

llvm/lib/Target/AArch64/AArch64SchedNeoverseV1.td

@@ -29,7 +29,7 @@ def NeoverseV1Model : SchedMachineModel {
   list<Predicate> UnsupportedFeatures = !listconcat(SVE2Unsupported.F,
                                                     SMEUnsupported.F,
                                                     [HasMTE, HasCPA,
-						    HasCSSC]);
+                                                    HasCSSC]);
 }
 
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