tests: remove redundant newlines that go 1.18 treats as errors (#10847)

internal/usage.go

@@ -63,5 +63,4 @@ Examples:
   telegraf --config telegraf.conf --input-filter cpu:mem --output-filter influxdb
 
   # run telegraf with pprof
-  telegraf --config telegraf.conf --pprof-addr localhost:6060
-`
+  telegraf --config telegraf.conf --pprof-addr localhost:6060`

internal/usage_windows.go

@@ -77,5 +77,4 @@ Examples:
   telegraf --service install --service-name=my-telegraf --service-display-name="My Telegraf"
 
   # install telegraf service with auto restart and restart delay of 3 minutes
-  telegraf --service install --service-auto-restart --service-restart-delay 3m
-  `
+  telegraf --service install --service-auto-restart --service-restart-delay 3m`

plugins/inputs/prometheus/prometheus_test.go

@@ -31,8 +31,8 @@ go_gc_duration_seconds_count 7
 go_goroutines 15
 # HELP test_metric An untyped metric with a timestamp
 # TYPE test_metric untyped
-test_metric{label="value"} 1.0 1490802350000
-`
+test_metric{label="value"} 1.0 1490802350000`
+
 const sampleSummaryTextFormat = `# HELP go_gc_duration_seconds A summary of the GC invocation durations.
 # TYPE go_gc_duration_seconds summary
 go_gc_duration_seconds{quantile="0"} 0.00010425500000000001
@@ -41,13 +41,12 @@ go_gc_duration_seconds{quantile="0.5"} 0.00015749400000000002
 go_gc_duration_seconds{quantile="0.75"} 0.000331463
 go_gc_duration_seconds{quantile="1"} 0.000667154
 go_gc_duration_seconds_sum 0.0018183950000000002
-go_gc_duration_seconds_count 7
-`
+go_gc_duration_seconds_count 7`
+
 const sampleGaugeTextFormat = `
 # HELP go_goroutines Number of goroutines that currently exist.
 # TYPE go_goroutines gauge
-go_goroutines 15 1490802350000
-`
+go_goroutines 15 1490802350000`
 
 func TestPrometheusGeneratesMetrics(t *testing.T) {
 	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
@@ -161,8 +160,8 @@ func TestSummaryMayContainNaN(t *testing.T) {
 go_gc_duration_seconds{quantile="0"} NaN
 go_gc_duration_seconds{quantile="1"} NaN
 go_gc_duration_seconds_sum 42.0
-go_gc_duration_seconds_count 42
-`
+go_gc_duration_seconds_count 42`
+
 	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		_, err := fmt.Fprintln(w, data)
 		require.NoError(t, err)

plugins/inputs/solr/testdata3_test.go

@@ -727,8 +727,7 @@ const mBeansSolr3MainResponse = `{
       }
     }
   ]
-}
-`
+}`
 
 var solr3CoreExpected = map[string]interface{}{
 	"num_docs":     int64(117166),

plugins/inputs/solr/testdata7_test.go

@@ -41,8 +41,7 @@ const mBeansSolr7Response = `
          }
       }
    ]
-}
-`
+}`
 
 var solr7CacheExpected = map[string]interface{}{
 	"evictions":            int64(141485),

plugins/inputs/solr/testdata_test.go

@@ -62,8 +62,7 @@ const statusResponse = `
     "QTime": 13,
     "status": 0
   }
-}
-`
+}`
 
 const mBeansMainResponse = `{
   "solr-mbeans": [
@@ -905,8 +904,7 @@ const mBeansMainResponse = `{
     "QTime": 8,
     "status": 0
   }
-}
-`
+}`
 
 const mBeansCore1Response = `{
   "solr-mbeans": [
@@ -1748,8 +1746,7 @@ const mBeansCore1Response = `{
     "QTime": 5,
     "status": 0
   }
-}
-`
+}`
 
 var solrAdminMainCoreStatusExpected = map[string]interface{}{
 	"num_docs":      int64(168943425),