Remove incomplete example used here (open-telemetry#4715)

* Remove incomplete example used here

* Adopting rfc2119 naming

* Fixing table for github

* correcting rfc use

CONTRIBUTING.md

@@ -207,16 +207,15 @@ To keep naming patterns consistent across the project, naming patterns are enfor
 - Methods that return a variable that uses the zero value or values provided via the method MUST have the prefix `New`. For example:
   - `func NewKinesisExporter(kpl aws.KinesisProducerLibrary)` allocates a variable that uses
     the variables passed on creation.
-  - `func NewKeyValueBuilder()` may allocate internal varialbes to a safe zero value.
-- Methods that return a variable that uses non zero value(s) that impacts business logic must use `NewDefault`. For example:
+  - `func NewKeyValueBuilder()` SHOULD allocate internal variables to a safe zero value.
+- Methods that return a variable that uses non zero value(s) that impacts business logic MUST use the prefix `NewDefault`. For example:
   - `func NewDefaultKinesisConfig()` would return a configuration that is the suggested default
     and can be updated without concern of a race condition.
-- Methods that act upon an input variable should have a signature that reflect concisely the logic being done. For example:
-  - `func FilterAttributes(attrs []Attribute, match func(attr Attribute) bool) []Attribute` must only filter attributes out of the passed input
+- Methods that act upon an input variable MUST have a signature that reflect concisely the logic being done. For example:
+  - `func FilterAttributes(attrs []Attribute, match func(attr Attribute) bool) []Attribute` MUST only filter attributes out of the passed input
     slice and return a new slice with values that `match` returns true. It may not do more work than what the method name implies, ie, it
-    may not key a global history of all the slices that have been filtered.
-  - `func Add(v pdata.values)` 
-- Variable assigned in a package's global scope that is preconfigured with a recommended set of values must use `Default` as the prefix. For example:
+    must not key a global history of all the slices that have been filtered.
+- Variable assigned in a package's global scope that is preconfigured with a default set of values MUST use `Default` as the prefix. For example:
   - `var DefaultMarshallers = map[string]pdata.Marshallers{...}` is defined with an exporters package that allows for converting an encoding name,
     `zipkin`, and return the preconfigured marshaller to be used in the export process.
 
@@ -226,10 +225,10 @@ To keep naming patterns consistent across the project, naming patterns are enfor
 In order to simplify developing within the project, library recommendations have been set
 and should be followed.
 
-| Scenario | Recommended                                   | Rationale        |
-| ----------------------------------------------------------------------------|
-| Hashing  | ["hashing/fnv"](https://pkg.go.dev/hash/fnv)  | The project adopted this as the default hashing method due to the efficiency and is reasonable for non cryptographic use |
-| Testing  | Use `t.Parallel()` where possible             | Enabling more test to be run in parallel will speed up the feedback process when working on the project.                 |
+| Scenario 	| Recommended                                  	| Rationale                                                                                                               	|
+|----------	|----------------------------------------------	|--------------------------------------------------------------------------------------------------------------------------	|
+| Hashing  	| ["hashing/fnv"](https://pkg.go.dev/hash/fnv) 	| The project adopted this as the default hashing method due to the efficiency and is reasonable for non cryptographic use 	|
+| Testing  	| Use `t.Parallel()` where possible            	| Enabling more test to be run in parallel will speed up the feedback process when working on the project.                 	|
 
 
 Within the project, there are some packages that are yet to follow the recommendations and are being address, however, any new code should adhere to the recommendations.