Fix typos and misspellings in comments

formated -> formatted
gaurantee -> guarantee
shear -> sheer
Signed-off-by: Nzhanghailiang <zhang.zhanghailiang@huawei.com>
Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru>

hw/ppc/spapr.c

@@ -541,7 +541,7 @@ static void *spapr_create_fdt_skel(hwaddr initrd_base,
     _FDT((fdt_property_cell(fdt, "rtas-error-log-max", RTAS_ERROR_LOG_MAX)));
 
     /*
-     * According to PAPR, rtas ibm,os-term, does not gaurantee a return
+     * According to PAPR, rtas ibm,os-term does not guarantee a return
      * back to the guest cpu.
      *
      * While an additional ibm,extended-os-term property indicates that

libcacard/vcard_emul_nss.c

@@ -286,10 +286,10 @@ vcard_emul_rsa_op(VCard *card, VCardKey *key,
             }
         }
         if ((i < buffer_size) && (buffer[i] == 0)) {
-            /* yes, we have a properly formated PKCS #1 signature */
+            /* yes, we have a properly formatted PKCS #1 signature */
             /*
              * NOTE: even if we accidentally got an encrypt buffer, which
-             * through shear luck started with 00, 01, ff, 00, it won't matter
+             * through sheer luck started with 00, 01, ff, 00, it won't matter
              * because the resulting Sign operation will effectively decrypt
              * the real buffer.
              */