Docs: Made raw notes more clearly separated

doc/data.txt

@@ -124,6 +124,5 @@ A log entry will have this form:
 
   YYYY-MM-DDTHH:MM:SS <version> <category> <message>
 
-
----
+--- Raw Notes ---
 

doc/examples.txt

@@ -137,8 +137,8 @@ Will construct the rule like this:
 The process of converting this rule structure to 'one.two.three four' is called
 normalizing.
 
----
 
+--- Raw Notes ---
 
 By using tags, this becomes:
 

doc/grammar.txt

@@ -119,4 +119,5 @@ supported keywords are:
   :quiet      No feedback
   :x          User defined
 
----
+
+--- Raw Notes ---

doc/intro.txt

@@ -83,5 +83,6 @@ Or the data can be exported in JSON:
 
   $ timew export last month > February.json
 
----
+
+--- Raw Notes ---
 

doc/project.txt

@@ -102,7 +102,8 @@ Extensions
 ----------
 A simple extension mechanism allows custom reports to be written and shared.
 
----
+
+--- Raw Notes ---
 
 - Given this:
     $ timew track yesterday 9am - 5pm tag1

doc/reports.txt

@@ -80,7 +80,8 @@ That is, the input it line-oriented, with first a header block of name/value
 pairs, then a blank line, then the JSON filtered data. The header block has all
 configuration names flattened, i.e. no hierarchy.
 
----
+
+--- Raw Notes ---
 
 - The Taskwarrior hook script should use a set of attributes for time tracking
   tags. Those will include: UUID, project, tags, description, and any chosen UDAs.

doc/rules.txt

@@ -194,7 +194,8 @@ There are several built-in functions, which may be used by rules:
   log("...")           Logs and continues
   sum_week("tag1")     Sums minutes in the current week for "tag1"
 
----
+
+--- Raw Notes ---
 
 - Need to distinguish between regular time and over time, with different rates
   and limits.