analyzer/ras-data/ras-data-definition.md: Fix MD040 warnings

The following warnings are generated by using markdownlint analysis:
```
MD040/fenced-code-language Fenced code blocks should have a language specified [Context: "```"]
```
Refer to markdown-lint [1] to fix MD040
[1]: https://github.com/updownpress/markdown-lint/blob/master/rules/040-fenced-code-language.md

Signed-off-by: George Liu <liuxiwei@ieisystem.com>
Change-Id: I7bcddf15b7b059a0be181c09fec4924f2d15ecb8
diff --git a/analyzer/ras-data/ras-data-definition.md b/analyzer/ras-data/ras-data-definition.md
index f21e0de..50c4867 100644
--- a/analyzer/ras-data/ras-data-definition.md
+++ b/analyzer/ras-data/ras-data-definition.md
@@ -28,7 +28,7 @@
 The value of this keyword is a JSON object representing all of the guardable
 unit targets on this chip. Each element of this object will have the format:
 
-```
+```text
 "<unit_name>" : "<relative_devtree_path>"
 ```
 
@@ -43,7 +43,7 @@
 The value of this keyword is a JSON object representing all of the buses
 connected to this chip. Each element of this object will have the format:
 
-```
+```text
 "<bus_name>" : { <bus_details> }
 ```
 
@@ -68,7 +68,7 @@
 actions available for the file. Each element of this object contains an array of
 RAS actions, to be performed in order, with the format:
 
-```
+```text
 "<action_name>" : [ { <action_element> }, ... ]
 ```
 
@@ -261,7 +261,7 @@
 from this chip requiring RAS actions. Each element of this object will have the
 format:
 
-```
+```text
 "<sig_id>" : { "<sig_bit>" : { "<sig_inst>" : "<action_name>", ... }, ... }
 ```