Fix typo

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/Graphs/AbstractMaterialGraph.cs

             base.OnAfterDeserialize();
         }
 
-        protected static ShaderGraphRequirements GetRequierments(AbstractMaterialNode nodeForRequirements)
+        protected static ShaderGraphRequirements GetRequirements(AbstractMaterialNode nodeForRequirements)
         {
             if (nodeForRequirements == null)
                 return ShaderGraphRequirements.none;
 
             surfaceInputs.AddShaderChunk("struct SurfaceInputs{", false);
             surfaceInputs.Indent();
-            var requirements = GetRequierments(node);
+            var requirements = GetRequirements(node);
             ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresNormal, InterpolatorType.Normal, surfaceInputs);
             ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresTangent, InterpolatorType.Tangent, surfaceInputs);
             ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresBitangent, InterpolatorType.BiTangent, surfaceInputs);

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Data/SubGraph/LayeredShaderGraph.cs

 
             var requirements = ShaderGraphRequirements.none;
             foreach (var layer in layerMap)
-                requirements = requirements.Union(GetRequierments(layer.Value.masterNode as AbstractMaterialNode));
+                requirements = requirements.Union(GetRequirements(layer.Value.masterNode as AbstractMaterialNode));
-            requirements = requirements.Union(GetRequierments(outputNode));
+            requirements = requirements.Union(GetRequirements(outputNode));
 
             ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresNormal, InterpolatorType.Normal, surfaceInputs);
             ShaderGenerator.GenerateSpaceTranslationSurfaceInputs(requirements.requiresTangent, InterpolatorType.Tangent, surfaceInputs);