Corrected comment

Author: dlemstra

src/Magick.NET/Formats/Pdf/PdfReadDefines.cs

@@ -27,7 +27,7 @@ public MagickFormat Format
     public bool? HideAnnotations { get; set; }
 
     /// <summary>
-    /// Gets or sets a value indicating whether all images are forced to be interpolated at full device resolution (pdf: interpolate).
+    /// Gets or sets a value indicating whether all images are forced to be interpolated at full device resolution (pdf:interpolate).
     /// </summary>
     public bool? Interpolate { get; set; }