Update MANUAL.txt for doctemplates changes.

MANUAL.txt

@@ -1892,10 +1892,9 @@ with a short line length.$~$
 
 ### Filters
 
-A filter transforms the value of a variable.  Filters are
-specified using a slash (`/`) between the variable name and
-the filter name.  They may go anywhere a variable can go.
-Example:
+A filter transforms the value of a variable or partial. Filters are
+specified using a slash (`/`) between the variable name (or partial)
+and the filter name. Example:
 
 ```
 $for(name)$
@@ -1905,6 +1904,8 @@ $endfor$
 $for(metadata/pairs)$
 - $it.key$: $it.value$
 $endfor$
+
+$employee:name()/uppercase$
 ```
 
 Filters may be chained:
@@ -1945,6 +1946,9 @@ Currently the following filters are predefined:
 - `reverse`:  Reverses a textual value or array,
   and has no effect on other values.
 
+- `chomp`:  Removes trailing newlines (and breakable space)
+  from a textual value, and has no effect on other values.
+
 - `alpha`:  Converts a textual value that can be
   read as an integer into a lowercase alphabetic
   character `a..z` (mod 26), and has no effect on