colors: adding some ABOUT: links.

extra/colors/cmyk/cmyk-docs.factor

@@ -12,3 +12,5 @@ ARTICLE: "colors.cmyk" "CMYK colors"
     >cmyka
 }
 { $see-also "colors" } ;
+
+ABOUT: "colors.cmyk"

extra/colors/hsl/hsl-docs.factor

@@ -12,3 +12,5 @@ ARTICLE: "colors.hsl" "HSL colors"
     >hsla
 }
 { $see-also "colors" } ;
+
+ABOUT: "colors.hsl"

extra/colors/lab/lab-docs.factor

@@ -13,3 +13,5 @@ ARTICLE: "colors.lab" "CIE 1976 LAB colors"
 }
 "For more information, see " { $url "https://en.wikipedia.org/wiki/Lab_color_space" }
 { $see-also "colors" } ;
+
+ABOUT: "colors.lab"

extra/colors/luv/luv-docs.factor

@@ -13,3 +13,5 @@ ARTICLE: "colors.luv" "CIE 1976 LUV colors"
 }
 "For more information, see " { $url "https://en.wikipedia.org/wiki/CIELUV_color_space" }
 { $see-also "colors" } ;
+
+ABOUT: "colors.luv"

extra/colors/ryb/ryb-docs.factor

@@ -12,3 +12,5 @@ ARTICLE: "colors.ryb" "RYB colors"
     >ryba
 }
 { $see-also "colors" } ;
+
+ABOUT: "colors.ryb"

extra/colors/xyy/xyy-docs.factor

@@ -13,3 +13,5 @@ ARTICLE: "colors.xyy" "CIE 1931 xyY colors"
 }
 "For more information, see " { $url "https://en.wikipedia.org/wiki/CIE_1931_color_space" }
 { $see-also "colors" } ;
+
+ABOUT: "colors.xyy"

extra/colors/xyz/xyz-docs.factor

@@ -13,3 +13,5 @@ ARTICLE: "colors.xyz" "CIE 1931 XYZ colors"
 }
 "For more information, see " { $url "https://en.wikipedia.org/wiki/CIE_1931_color_space" }
 { $see-also "colors" } ;
+
+ABOUT: "colors.xyz"

extra/colors/yiq/yiq-docs.factor

@@ -12,3 +12,5 @@ ARTICLE: "colors.yiq" "YIQ colors"
     >yiqa
 }
 { $see-also "colors" } ;
+
+ABOUT: "colors.yiq"

extra/colors/yuv/yuv-docs.factor

@@ -12,3 +12,5 @@ ARTICLE: "colors.yuv" "YUV colors"
     >yuva
 }
 { $see-also "colors" } ;
+
+ABOUT: "colors.yuv"