Fixed extra spaces.

src/renderers/shaders/ShaderChunk/envmap_physical_pars_fragment.glsl.js

@@ -1,4 +1,4 @@
-export default /* glsl */ `
+export default /* glsl */`
 #if defined( USE_ENVMAP )
 
 	#ifdef ENVMAP_MODE_REFRACTION

src/renderers/shaders/ShaderChunk/lights_fragment_maps.glsl.js

@@ -1,4 +1,4 @@
-export default /* glsl */ `
+export default /* glsl */`
 #if defined( RE_IndirectDiffuse )
 
 	#ifdef USE_LIGHTMAP

src/renderers/shaders/ShaderChunk/lights_physical_pars_fragment.glsl.js

@@ -1,4 +1,4 @@
-export default /* glsl */ `
+export default /* glsl */`
 struct PhysicalMaterial {
 
 	vec3	diffuseColor;