reverted most quotes in guidelines.md

The way that markdown quotes are currently formatted (with a gray
vertical line) looks too much like a change bar.  The change bar
is an important tool to help notice new and changed rules and
guidelines.  Unfortunately the current quotes style looks too much
like a change bar, so we use markdown quotes **ONLY** for literal
quotes (such as from Mark Twain) in the `guidelines.md` file.

next/guidelines.md

@@ -187,11 +187,13 @@ For example:
 
 The IOCCC size tool, when using the -i option, may be summarized as:
 
->   The size tool counts most C reserved words (keyword, secondary,<br>
->   and selected preprocessor keywords) as 1.  The size tool counts all<br>
->   other octets as 1 excluding ASCII whitespace, and excluding any<br>
->   '`;`', '`{`' or '`}`' followed by ASCII whitespace, and excluding any<br>
->   '`;`', '`{`' or '`}`' octet immediately before the end of file.
+```
+    The size tool counts most C reserved words (keyword, secondary,
+    and selected preprocessor keywords) as 1.  The size tool counts all
+    other octets as 1 excluding ASCII whitespace, and excluding any
+    '`;`', '`{`' or '`}`' followed by ASCII whitespace, and excluding any
+    '`;`', '`{`' or '`}`' octet immediately before the end of file.
+```
 
 ASCII whitespace includes ASCII tab, ASCII space, ASCII newline,
 ASCII formfeed, and ASCII carriage return.
@@ -710,47 +712,58 @@ If there are limitations in your entry, you are highly encouraged
 to note such limitations in your remarks file.  For example if your
 entry factors values up to a certain size, you might want to state:
 
-> This entry factors values up 2305567963945518424753102147331756070.
+```
+This entry factors values up 2305567963945518424753102147331756070.
 Attempting to factor larger values will produce unpredictable results.
+```
 
 The judges might try to factor the value -5, so you want to might state:
 
-> This entry factors positive values up 2305567963945518424753102147331756070.
+```
+This entry factors positive values up 2305567963945518424753102147331756070.
 Attempting to factor large values will produce unpredictable results.
+```
 
 However the judges might try to also factor 0, so you want to might state:
 
-> This entry factors values between 1 and 2305567963945518424753102147331756070.
+```
+This entry factors values between 1 and 2305567963945518424753102147331756070.
 Attempting to factor values outside that range will produce unpredictable
 results.
+```
 
 Moreover the try to also factor 3.5 or 0x7, or Fred, so you want to might state:
 
-> This entry factors integers between 1 and
-2305567963945518424753102147331756070\.  Attempting to factor anything else will
-produce unpredictable results.
+```
+This entry factors integers between 1 and 2305567963945518424753102147331756070.
+Attempting to factor anything else will produce unpredictable results.
+```
 
 You entry might be better off catching the attempt to factor bogus values
 and doing something interesting.  So you might want to code accordingly and state:
 
-> This entry factors integers between 1 and
-2305567963945518424753102147331756070\.  Attempting to factor anything else will
-cause the program to insult your pet fish Eric.
+```
+This entry factors integers between 1 and 2305567963945518424753102147331756070.
+Attempting to factor anything else will cause the program to insult your pet fish Eric.
+```
 
 The judges might not have a pet fish named Eric, so might want to state:
 
-> This entry factors integers between 1 and
-2305567963945518424753102147331756070\.  Attempting to factor anything else will
-cause the program to insult your pet fish Eric, or in the case that you lack
-such a pet, will insult the pet that you do not have.
+``
+This entry factors integers between 1 and 2305567963945518424753102147331756070.
+Attempting to factor anything else will cause the program to insult your pet fish Eric,
+or in the case that you lack such a pet, will insult the pet that you do not have.
+```
 
 When all other things are equal, an entry with fewer limitation will be judged
 better than an entry with lots of limitations.  So you might want to code accordingly
 and state:
 
-> This entry attempts to a factor value of any size provided that the program is
+```
+This entry attempts to a factor value of any size provided that the program is
 given enough time and memory.  If the value is not a proper integer, the program
 will insult a fish named Eric, even if such a fish does not exist.
+```
 
 **`|`**   We **DISLIKE** the use of use ASCII tab characters in markdown files, such as in the required `remarks.md` file.