perf vendor events arm64 AmpereOne: Fix typos in metrics' descriptions

While fixing a typo in "l1d_cache_access_prefetches" in AmpereOneX,
a few other typos were found in metrics' descriptions too. While AmpereOne
doesn't have the metric, it did have the typos in the descriptions.

Reviewed-by: James Clark <[e-mail]>
Signed-off-by: Ilkka Koskinen <[e-mail]>
Cc: Adrian Hunter <[e-mail]>
Cc: Alexander Shishkin <[e-mail]>
Cc: Ian Rogers <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Jiri Olsa <[e-mail]>
Cc: John Garry <[e-mail]>
Cc: Kan Liang <[e-mail]>
Cc: Leo Yan <[e-mail]>
Cc: Mark Rutland <[e-mail]>
Cc: Mike Leach <[e-mail]>
Cc: Namhyung Kim <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
Cc: Will Deacon <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Arnaldo Carvalho de Melo <[e-mail]>

tools/perf/pmu-events/arch/arm64/ampere/ampereone/metrics.json

···
     {
 	"MetricName": "load_store_spec_rate",
 	"MetricExpr": "((LDST_SPEC / INST_SPEC) * 100)",
-	"BriefDescription": "The rate of load or store instructions speculatively executed to overall instructions speclatively executed",
+	"BriefDescription": "The rate of load or store instructions speculatively executed to overall instructions speculatively executed",
         "MetricGroup": "Operation_Mix",
         "ScaleUnit": "1percent of operations"
     },
···
     {
 	"MetricName": "pc_write_spec_rate",
 	"MetricExpr": "((PC_WRITE_SPEC / INST_SPEC) * 100)",
-	"BriefDescription": "The rate of software change of the PC speculatively executed to overall instructions speclatively executed",
+	"BriefDescription": "The rate of software change of the PC speculatively executed to overall instructions speculatively executed",
         "MetricGroup": "Operation_Mix",
         "ScaleUnit": "1percent of operations"
     },
···
     {
 	"MetricName": "stall_frontend_cache_rate",
 	"MetricExpr": "((STALL_FRONTEND_CACHE / CPU_CYCLES) * 100)",
-	"BriefDescription": "Proportion of cycles stalled and no ops delivered from frontend and cache miss",
+	"BriefDescription": "Proportion of cycles stalled and no operations delivered from frontend and cache miss",
 	"MetricGroup": "Stall",
         "ScaleUnit": "1percent of cycles"
     },
     {
 	"MetricName": "stall_frontend_tlb_rate",
 	"MetricExpr": "((STALL_FRONTEND_TLB / CPU_CYCLES) * 100)",
-	"BriefDescription": "Proportion of cycles stalled and no ops delivered from frontend and TLB miss",
+	"BriefDescription": "Proportion of cycles stalled and no operations delivered from frontend and TLB miss",
 	"MetricGroup": "Stall",
         "ScaleUnit": "1percent of cycles"
     },