Fix invalid HTTP header (#63) #300

Job	Run time
setup	1s
build (esp32AIThinker)	1m 30s
build (esp32AIThinker, _release)	1m 30s
build (esp32M5Stack)	1m 21s
build (esp32M5Stack, _release)	1m 25s
build (esp32Cam)	1m 22s
build (esp32Cam, _release)	1m 29s
build (esp_eye)	1m 30s
build (esp_eye, _release)	1m 28s
build (wrover)	1m 24s
build (wrover, _release)	1m 18s
build (wrooms3QIO)	1m 51s
build (wrooms3QIO, _release)	1m 46s
build (wrooms3QIOUSB)	1m 46s
build (wrooms3QIOUSB, _release)	1m 36s
build (wrooms3)	1m 49s
build (wrooms3, _release)	1m 38s
build (wrooms3USB)	1m 36s
build (wrooms3USB, _release)	1m 45s
build (xiaosenses3)	1m 38s
build (xiaosenses3, _release)	1m 39s
build (xiaosenses3_USB)	1m 50s
build (xiaosenses3_USB, _release)	1m 36s
release-openiris	1m 0s
Cleanup actions (esp32AIThinker)	2s
Cleanup actions (esp32AIThinker, _release)	2s
Cleanup actions (esp32M5Stack)	7s
Cleanup actions (esp32M5Stack, _release)	1s
Cleanup actions (esp32Cam)	4s
Cleanup actions (esp32Cam, _release)	2s
Cleanup actions (esp_eye)	2s
Cleanup actions (esp_eye, _release)	1s
Cleanup actions (wrover)	4s
Cleanup actions (wrover, _release)	4s
Cleanup actions (wrooms3QIO)	1s
Cleanup actions (wrooms3QIO, _release)	2s
Cleanup actions (wrooms3QIOUSB)	3s
Cleanup actions (wrooms3QIOUSB, _release)	2s
Cleanup actions (wrooms3)	1s
Cleanup actions (wrooms3, _release)	3s
Cleanup actions (wrooms3USB)	2s
Cleanup actions (wrooms3USB, _release)	1s
Cleanup actions (xiaosenses3)	4s
Cleanup actions (xiaosenses3, _release)	4s
Cleanup actions (xiaosenses3_USB)	2s
Cleanup actions (xiaosenses3_USB, _release)	3s
	36m 45s

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