Use ## for comments in tests

Author: kovdan01

lld/test/ELF/aarch64-got-relocations-pauth.s

@@ -26,10 +26,10 @@
 
 # EXTERNAL:      Hex dump of section '.got':
 # EXTERNAL-NEXT: 0x00020380 00000000 00000080 00000000 000000a0
-#                                          ^^
-#                                          0b10000000 bit 63 address diversity = true, bits 61..60 key = IA
-#                                                            ^^
-#                                                            0b10100000 bit 63 address diversity = true, bits 61..60 key = DA
+##                                         ^^
+##                                         0b10000000 bit 63 address diversity = true, bits 61..60 key = IA
+##                                                           ^^
+##                                                           0b10100000 bit 63 address diversity = true, bits 61..60 key = DA
 
 # LOCAL: Symbol table '.symtab' contains {{.*}} entries:
 # LOCAL:    Num:    Value          Size Type    Bind   Vis       Ndx Name
@@ -38,10 +38,10 @@
 
 # LOCAL:         Hex dump of section '.got':
 # LOCAL-NEXT:    0x00020320 00000000 00000080 00000000 000000a0
-#                                          ^^
-#                                          0b10000000 bit 63 address diversity = true, bits 61..60 key = IA
-#                                                            ^^
-#                                                            0b10100000 bit 63 address diversity = true, bits 61..60 key = DA
+##                                         ^^
+##                                         0b10000000 bit 63 address diversity = true, bits 61..60 key = IA
+##                                                           ^^
+##                                                           0b10100000 bit 63 address diversity = true, bits 61..60 key = DA
 
 # RUN: llvm-objdump -d external | FileCheck %s --check-prefix=EXTERNAL-ASM