Fix spellings (#12277) [backport]

nimsuggest/nimsuggest.nim

@@ -13,7 +13,7 @@ when not defined(nimcore):
   {.error: "nimcore MUST be defined for Nim's core tooling".}
 
 import strutils, os, parseopt, parseutils, sequtils, net, rdstdin, sexp
-# Do NOT import suggest. It will lead to wierd bugs with
+# Do NOT import suggest. It will lead to weird bugs with
 # suggestionResultHook, because suggest.nim is included by sigmatch.
 # So we import that one instead.
 import compiler / [options, commands, modules, sem,

nimsuggest/tester.nim

@@ -140,7 +140,7 @@ proc runCmd(cmd, dest: string): bool =
   of "!del":
     del(x)
   else:
-    quit "unkown command: " & cmd
+    quit "unknown command: " & cmd
 
 proc smartCompare(pattern, x: string): bool =
   if pattern.contains('*'):