fix tidy

Author: evq

src/librustc_target/spec/thumb_base.rs

@@ -19,7 +19,7 @@
 // - Cortex-M7(F)
 // - Cortex-M23
 //
-// We have opted for these targets instead of one target per processor (e.g. `cortex-m0`, `cortex-m3`,
+// We have opted for these instead of one target per processor (e.g. `cortex-m0`, `cortex-m3`,
 // etc) because the differences between some processors like the cortex-m0 and cortex-m1 are almost
 // non-existent from the POV of codegen so it doesn't make sense to have separate targets for them.
 // And if differences exist between two processors under the same target, rustc flags can be used to