[Formula] Fix i18n issues

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/calculations/counter_rate.tsx

@@ -132,7 +132,7 @@ This calculation will be done separately for separate series defined by filters
 It uses the current interval when used in Formula.
 
 Example: Visualize the rate of bytes received over time by a memcached server:
-${'`counter_rate(max(memcached.stats.read.bytes))`'}
+\`counter_rate(max(memcached.stats.read.bytes))\`
       `,
     }),
   },

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/calculations/cumulative_sum.tsx

@@ -123,7 +123,7 @@ Calculates the cumulative sum of a metric over time, adding all previous values
 This calculation will be done separately for separate series defined by filters or top values dimensions.
 
 Example: Visualize the received bytes accumulated over time:
-${'`cumulative_sum(sum(bytes))`'}
+\`cumulative_sum(sum(bytes))\`
       `,
     }),
   },

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/calculations/differences.tsx

@@ -121,7 +121,7 @@ Differences requires the data to be sequential. If your data is empty when using
 This calculation will be done separately for separate series defined by filters or top values dimensions.
 
 Example: Visualize the change in bytes received over time:
-${'`differences(sum(bytes))`'}
+\`differences(sum(bytes))\`
       `,
     }),
   },

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/calculations/moving_average.tsx

@@ -150,7 +150,7 @@ This calculation will be done separately for separate series defined by filters
 Takes a named parameter \`window\` which specifies how many last values to include in the average calculation for the current value.
 
 Example: Smooth a line of measurements:
-${'`moving_average(sum(bytes), window=5)`'}
+\`moving_average(sum(bytes), window=5)\`
       `,
       values: {
         defaultValue: WINDOW_DEFAULT_VALUE,

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/cardinality.tsx

@@ -119,10 +119,10 @@ export const cardinalityOperation: OperationDefinition<CardinalityIndexPatternCo
 Calculates the number of unique values of a specified field. Works for number, string, date and boolean values.
 
 Example: Calculate the number of different products:
-${'`unique_count(product.name)`'}
+\`unique_count(product.name)\`
 
 Example: Calculate the number of different products from the "clothes" group:
-${"`unique_count(product.name, kql='product.group=clothes')`"}
+\`unique_count(product.name, kql='product.group=clothes')\`
       `,
     }),
   },

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/count.tsx

@@ -97,10 +97,10 @@ export const countOperation: OperationDefinition<CountIndexPatternColumn, 'field
 Calculates the number of documents.
 
 Example: Calculate the number of documents: 
-${'`count()`'}
+\`count()\`
 
 Example: Calculate the number of documents matching a certain filter:
-${"`count(kql='price > 500')`"}
+\`count(kql='price > 500')\`
       `,
     }),
   },

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/last_value.tsx

@@ -277,7 +277,7 @@ Returns the value of a field from the last document, ordered by the default time
 This function is usefull the retrieve the latest state of an entity.
 
 Example: Get the current status of server A: 
-${'`last_value(server.status, kql=\'server.name="A"\')`'}
+\`last_value(server.status, kql=\'server.name="A"\')\`
       `,
     }),
   },

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/metrics.tsx

@@ -138,10 +138,10 @@ function buildMetricOperation<T extends MetricColumn<string>>({
 Returns the {metric} of a field. This function only works for number fields.
 
 Example: Get the {metric} of price:
-${'`{metric}(price)`'}
+\`{metric}(price)\`
 
 Example: Get the {metric} of price for orders from the UK:
-${"`{metric}(price, kql='location:UK')`"}
+\`{metric}(price, kql='location:UK')\`
       `,
         values: {
           metric: type,

x-pack/plugins/lens/public/indexpattern_datasource/operations/definitions/percentile.tsx

@@ -205,7 +205,7 @@ export const percentileOperation: OperationDefinition<PercentileIndexPatternColu
 Returns the specified percentile of the values of a field. This is the value n percent of the values occuring in documents are smaller.
 
 Example: Get the number of bytes larger than 95 % of values:
-${'`percentile(bytes, percentile=95)`'}
+\`percentile(bytes, percentile=95)\`
       `,
     }),
   },