[lld,test] Fix few FileCheck annotation typos (#92238)

Author: klensy

lld/test/MachO/install-name.s

@@ -31,7 +31,7 @@
 
 # ID:          cmd LC_ID_DYLIB
 # ID-NEXT: cmdsize
-# LID-NEXT:   name foo
+# ID-NEXT:   name foo
 
 .globl _main
 _main:

lld/test/MachO/objc-methname.s

@@ -16,7 +16,7 @@
 
 # CSTRING: Contents of (__TEXT,__cstring) section
 # CSTRING-NEXT: existing-cstring
-# CSTIRNG-EMPTY:
+# CSTRING-EMPTY:
 
 # METHNAME: Contents of (__TEXT,__objc_methname) section
 # METHNAME-NEXT: existing_methname