ajc.adoc: Cosmetic improvements

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>

docs/devguide/ajc.adoc

 === Options
 
 `-injars <JarList>`::
-  deprecated: since 1.2, use -inpath, which also takes directories.
+  deprecated: since 1.2, use `-inpath`, which also takes directories.
 `-inpath <Path>`::
   Accept as source bytecode any .class files in the .jar files or
   directories on Path. The output will include these classes, possibly
   the compiler. When running the output classes, the run classpath
   should contain all aspectpath entries. Path, like classpath, is a
   single argument containing a list of paths to jar files, delimited by
-  the platform- specific classpath delimiter.
+  the platform-specific classpath delimiter.
 `-argfile <File>`::
   The file contains a line-delimited list of arguments. Each line in the
   file should contain one option, filename, or argument string (e.g., a
   working directory). Comments, as in Java, start with `//` and extend
   to the end of the line. Options specified in argument files may
   override rather than extending existing option values, so avoid
-  specifying options like <-classpath> in argument files unlike the
-  argument file is the only build specification. The form <@file> is the
-  same as specifying <-argfile file>.
+  specifying options like `-classpath` in argument files unlike the
+  argument file is the only build specification. The form `@file` is the
+  same as specifying `-argfile file`.
 `-outjar <output.jar>`::
   Put output classes in zip file output.jar.
 `-outxml`::
   compiler will wait to recompile until it reads a newline from the
   standard input, and will quit when it reads a 'q'. It will only
   recompile necessary components, so a recompile should be much faster
-  than doing a second compile. This requires -sourceroots.
+  than doing a second compile. This requires `-sourceroots`.
 `-sourceroots <DirPaths>`::
   Find and build all .java or .aj source files under any directory
   listed in DirPaths. DirPaths, like classpath, is a single argument
   Same as -Xlint:warning (enabled by default)
 `-Xlint:\{level}`::
   Set default level for messages about potential programming mistakes in
-  crosscutting code. \{level} may be ignore, warning, or error. This
-  overrides entries in org/aspectj/weaver/XlintDefault.properties from
+  crosscutting code. `\{level}` may be `ignore`, `warning`, or `error`. This
+  overrides entries in _org/aspectj/weaver/XlintDefault.properties_ from
   aspectjtools.jar, but does not override levels set using the
-  -Xlintfile option.
+  `-Xlintfile` option.
 `-Xlintfile <PropertyFile>`::
   Specify properties file to set levels for specific crosscutting
   messages. PropertyFile is a path to a Java .properties file that takes
   the same property names and values as
-  org/aspectj/weaver/XlintDefault.properties from aspectjtools.jar,
+  _org/aspectj/weaver/XlintDefault.properties_ from aspectjtools.jar,
   which it also overrides.
 `-help`::
   Emit information on compiler options and usage
   E.g., `-11` implies `-source 11` and `-target 11`.
 
 `-nowarn`::
-  Emit no warnings (equivalent to '-warn:none') This does not suppress
+  Emit no warnings (equivalent to `-warn:none`) This does not suppress
   messages generated by `declare warning` or `Xlint`.
 `-warn: <items>`::
   Emit warnings for any instances of the comma-delimited list of
-  questionable code (eg '-warn:unusedLocals,deprecation'):
+  questionable code (e.g. `-warn:unusedLocals,deprecation`):
 +
 [source, text]
 ....
 `-warn:none` does not suppress messages generated by `declare warning`
   or `Xlint`.
 `-deprecation`::
-  Same as -warn:deprecation
+  Same as `-warn:deprecation`
 `-noImportError`::
   Emit no errors for unresolved imports
 `-proceedOnError`::
   Compute reference information.
 `-encoding <format>`::
   Specify default source encoding format. Specify custom encoding on a
-  per file basis by suffixing each input source file/folder name with
+  per-file basis by suffixing each input source file/folder name with
   '[encoding]'.
 `-verbose`::
   Emit messages about accessed/processed compilation units
 `-time`::
   Display speed information.
 `-noExit`::
-  Do not call System.exit(n) at end of compilation (n=0 if no error)
+  Do not call `System.exit(n)` at end of compilation (n=0 if no error)
 `-repeat <N>`::
   Repeat compilation process N times (typically to do performance
   analysis).