addings spec doc strings for noise

Author: ld-kerley

dev_spec/source/placeholder.md

@@ -18,3 +18,34 @@ To generate the markdown table for the node ports just add the string `@MX_TABLE
 
 ### modulo
 @MX_TABLE_modulo@
+
+
+### noise2d
+@MX_TABLE_noise2d@
+
+### noise3d
+@MX_TABLE_noise3d@
+
+### fractal3d
+@MX_TABLE_fractal3d@
+
+### cellnoise2s
+@MX_TABLE_cellnoise2d@
+
+### cellnoise3d
+@MX_TABLE_cellnoise3d@
+
+### worleynoise2d
+@MX_TABLE_worleynoise2d@
+
+### worleynoise3d
+@MX_TABLE_worleynoise3d@
+
+### unifiednoise2d
+@MX_TABLE_unifiednoise2d@
+
+### unifiednoise3d
+@MX_TABLE_unifiednoise3d@
+
+
+