Fix heading level of 'Try' section

It was agreed to be '## Try:' but there were many files where it was
'### Try:'. This has been corrected.

1992/adrian/README.md

@@ -17,7 +17,7 @@ STATUS: INABIAF - please **DO NOT** fix
 For more detailed information see [1992 adrian in bugs.md](/bugs.md#1992-adrian).
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

1992/albert/README.md

@@ -26,7 +26,7 @@ For more detailed information see [1992 albert in bugs.md](/bugs.md#1992-albert)
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

1992/ant/README.md

@@ -16,7 +16,7 @@ make all
 where `Makefile` is a Makefile to use and `rule` is an optional rule to use.
 
 
-### Try:
+## Try:
 
 
 ```sh

1992/buzzard.1/README.md

@@ -13,7 +13,7 @@ make all
 ```
 
 
-### Try:
+## Try:
 
 ```sh
 ./try.sh

1992/gson/README.md

@@ -26,7 +26,7 @@ For more detailed information see [1992 gson in bugs.md](/bugs.md#1992-gson).
 ```
 
 
-### Try:
+## Try:
 
 Determine where your system dictionary is located.  You may find
 it located in one of the following places:

1992/nathan/README.md

@@ -13,7 +13,7 @@ make all
 ```
 
 
-### Try:
+## Try:
 
 To see some other fun uses:
 

1992/vern/README.md

@@ -23,7 +23,7 @@ For more detailed information see [1992 vern in bugs.md](/bugs.md#1992-vern).
 ```
 
 
-### Try:
+## Try:
 
 You might start off by giving the following input:
 

1992/westley/README.md

@@ -37,7 +37,7 @@ prohibitive if it cannot be compiled and linked (it uses curses); instead one
 should just use the `westley` and `westley.alt` programs directly.
 
 
-### Try:
+## Try:
 
 ```sh
 ./whereami 47 -122	# NOTE: - means west of meridian