chore: fix extra newline in comments for copyfrom (#1438)

Author: alexdulin

internal/codegen/golang/templates/pgx/copyfromCopy.tmpl

@@ -37,10 +37,10 @@ func (r iteratorFor{{.MethodName}}) Err() error {
 
 {{range .Comments}}//{{.}}
 {{end -}}
-{{- if $.EmitMethodsWithDBArgument}}
+{{- if $.EmitMethodsWithDBArgument -}}
 func (q *Queries) {{.MethodName}}(ctx context.Context, db DBTX, {{.Arg.SlicePair}}) (int64, error) {
 	return db.CopyFrom(ctx, {{.TableIdentifier}}, {{.Arg.ColumnNames}}, &iteratorFor{{.MethodName}}{rows: {{.Arg.Name}}})
-{{- else}}
+{{- else -}}
 func (q *Queries) {{.MethodName}}(ctx context.Context, {{.Arg.SlicePair}}) (int64, error) {
 	return q.db.CopyFrom(ctx, {{.TableIdentifier}}, {{.Arg.ColumnNames}}, &iteratorFor{{.MethodName}}{rows: {{.Arg.Name}}})
 {{- end}}

internal/endtoend/testdata/copyfrom/postgresql/pgx/go/copyfrom.go

@@ -2,7 +2,9 @@ CREATE SCHEMA myschema;
 CREATE TABLE myschema.foo (a text, b integer);
 
 -- name: InsertValues :copyfrom
+-- InsertValues inserts multiple values using copy.
 INSERT INTO myschema.foo (a, b) VALUES ($1, $2);
 
 -- name: InsertSingleValue :copyfrom
+-- InsertSingleValue inserts a single value using copy.
 INSERT INTO myschema.foo (a) VALUES ($1);